diff --git a/public/imgsFinalPractice/auditorium.jpg b/public/imgsFinalPractice/auditorium.jpg
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diff --git a/public/imgsFinalPractice/conferenceRoom.jpg b/public/imgsFinalPractice/conferenceRoom.jpg
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index 00000000..a8d500a4
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diff --git a/public/imgsFinalPractice/meetingRoom.jpg b/public/imgsFinalPractice/meetingRoom.jpg
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index 00000000..f1a05957
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diff --git a/public/imgsFinalPractice/microphone.jpg b/public/imgsFinalPractice/microphone.jpg
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diff --git a/public/imgsFinalPractice/presentationRoom.jpg b/public/imgsFinalPractice/presentationRoom.jpg
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diff --git a/public/imgsFinalPractice/projector.jpg b/public/imgsFinalPractice/projector.jpg
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diff --git a/public/imgsFinalPractice/signpost.jpg b/public/imgsFinalPractice/signpost.jpg
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diff --git a/public/imgsFinalPractice/smallMeetingRoom.jpg b/public/imgsFinalPractice/smallMeetingRoom.jpg
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diff --git a/public/imgsFinalPractice/speakers.jpg b/public/imgsFinalPractice/speakers.jpg
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diff --git a/public/imgsFinalPractice/whiteboard.png b/public/imgsFinalPractice/whiteboard.png
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diff --git a/src/ConferenceEvent.jsx b/src/ConferenceEvent.jsx
index 612a4648..d337a29d 100644
--- a/src/ConferenceEvent.jsx
+++ b/src/ConferenceEvent.jsx
@@ -1,16 +1,27 @@
-import React, { useState } from "react";
+import { useState } from "react";
 import "./ConferenceEvent.css";
 import TotalCost from "./TotalCost";
 import { useSelector, useDispatch } from "react-redux";
 import { incrementQuantity, decrementQuantity } from "./venueSlice";
+import { incrementAvQuantity, decrementAvQuantity } from "./avSlice.js";
+import { toggleMealSelection } from './mealsSlice.js';
+
 const ConferenceEvent = () => {
     const [showItems, setShowItems] = useState(false);
     const [numberOfPeople, setNumberOfPeople] = useState(1);
+    
+    // venue:
     const venueItems = useSelector((state) => state.venue);
-    const dispatch = useDispatch();
+    const dispatch = useDispatch();    // used by all slices 
     const remainingAuditoriumQuantity = 3 - venueItems.find(item => item.name === "Auditorium Hall (Capacity:200)").quantity;
-
     
+    // av:
+    const avItems = useSelector((state) => state.av);
+    
+    // meals:
+    const mealsItems = useSelector((state) => state.meals);
+
+
     const handleToggleItems = () => {
         console.log("handleToggleItems called");
         setShowItems(!showItems);
@@ -23,29 +34,93 @@ const ConferenceEvent = () => {
         dispatch(incrementQuantity(index));
       };
     
-      const handleRemoveFromCart = (index) => {
-        if (venueItems[index].quantity > 0) {
-          dispatch(decrementQuantity(index));
-        }
-      };
+    const handleRemoveFromCart = (index) => {
+      if (venueItems[index].quantity > 0) {
+        dispatch(decrementQuantity(index));
+      }
+    };
+    
+    // av:
     const handleIncrementAvQuantity = (index) => {
+      dispatch(incrementAvQuantity(index));
     };
-
+    // av:
     const handleDecrementAvQuantity = (index) => {
+      dispatch(decrementAvQuantity(index));
     };
 
+    // meals:
     const handleMealSelection = (index) => {
-       
+      const item = mealsItems[index];
+      if(item.selected && item.type === 'mealForPeople'){
+        const newNumberOfPeople = item.selected ? numberOfPeople : 0;
+        dispatch(toggleMealSelection(index, newNumberOfPeople));
+      }else{
+        dispatch(toggleMealSelection(index));
+      }
     };
 
     const getItemsFromTotalCost = () => {
         const items = [];
+        venueItems.forEach((item) => {
+          if(item.quantity > 0){
+            items.push({...item, type: "venue"});
+          }
+        });
+        avItems.forEach((item) => {
+          if(
+            item.quantity && !items.some((i) => i.name === item.name && i.type === "av")
+          ) {
+            items.push({...item, type: "av"});
+          }
+        });
+        mealsItems.forEach((item) => {
+          if(item.selected){
+            const itemForDisplay = { ...item, type: "meals" };
+            if(item.numberOfPeople){
+              itemForDisplay.numberOfPeople = numberOfPeople;
+            }
+            items.push(itemForDisplay);
+          }
+        });
+        
+        return items;
     };
 
     const items = getItemsFromTotalCost();
 
     const ItemsDisplay = ({ items }) => {
-
+      console.log(items);
+      return <>
+        <div className="display_box1">
+          {items.length === 0  && <p>No items selected</p>}
+          <table className="table_item_data">
+            <thead>
+              <tr>
+                <th>Name</th>
+                <th>Unit Cost</th>
+                <th>Quantity</th>
+                <th>Subtotal</th>
+              </tr>
+            </thead>
+            <tbody>
+              {items.map((item, index) => (
+                <tr key={index}>
+                  <td>{item.name}</td>
+                  <td>{item.cost}</td>
+                  <td>
+                    {item.type === "meals" || item.numberOfPeople ? 
+                    ` For ${numberOfPeople} people` : item.quantity}
+                  </td>
+                  <td>{item.type === "meals" || item.numberOfPeople ?
+                    `${item.cost * numberOfPeople}` : `${item.cost * item.quantity}`}
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      </>
     };
     const calculateTotalCost = (section) => {
         let totalCost = 0;
@@ -53,11 +128,30 @@ const ConferenceEvent = () => {
           venueItems.forEach((item) => {
             totalCost += item.cost * item.quantity;
           });
+        }else if(section === "av"){          // adding the costs of the data from the av items 
+          avItems.forEach((item) => {
+            totalCost += item.cost * item.quantity;
+          });
+        }else if(section == "meals"){
+          mealsItems.forEach((item) => {
+            if(item.selected){
+              totalCost += item.cost * numberOfPeople;      // if item is selected, its cost is multiplied by the numberOfPeople
+            }
+          });
         }
+
         return totalCost;
       };
+    
+    // venue:
     const venueTotalCost = calculateTotalCost("venue");
 
+    // av:
+    const avTotalCost = calculateTotalCost("av");
+    
+    // meals:
+    const mealsTotalCost = calculateTotalCost("meals");
+    
     const navigateToProducts = (idType) => {
         if (idType == '#venue' || idType == '#addons' || idType == '#meals') {
           if (showItems) { // Check if showItems is false
@@ -66,6 +160,13 @@ const ConferenceEvent = () => {
         }
       }
 
+    // object that include the all three subtotals in the totalcost 
+    const totalCosts = {
+      venue: venueTotalCost,
+      av: avTotalCost,
+      meals: mealsTotalCost,
+    };
+
     return (
         <>
             <navbar className="navbar_event_conference">
@@ -146,21 +247,29 @@ const ConferenceEvent = () => {
         </div>
         <div className="total_cost">Total Cost: ${venueTotalCost}</div>
       </div>
-
                             {/*Necessary Add-ons*/}
                             <div id="addons" className="venue_container container_main">
 
-
                                 <div className="text">
-
                                     <h1> Add-ons Selection</h1>
-
                                 </div>
                                 <div className="addons_selection">
-
+                                  {avItems.map((item, index) => (
+                                    <div className="av_data venue_main" key={index}>
+                                      <div className="img">
+                                        <img src={item.img} alt={item.name} />
+                                      </div>
+                                      <div className="text"> {item.name}</div>
+                                      <div> ${item.cost}</div>
+                                        <div className="addons_btn">
+                                          <button className="btn-warning" onClick={() => handleDecrementAvQuantity(index)}> &ndash; </button>
+                                          <span className="quantity-value">{item.quantity}</span>
+                                            <button className=" btn-success" onClick={() => handleIncrementAvQuantity(index)}> &#43; </button>
+                                        </div>
+                                    </div>
+                                  ))}    
                                 </div>
-                                <div className="total_cost">Total Cost:</div>
-
+                                <div className="total_cost">Total Cost: {avTotalCost}</div>
                             </div>
 
                             {/* Meal Section */}
@@ -168,18 +277,33 @@ const ConferenceEvent = () => {
                             <div id="meals" className="venue_container container_main">
 
                                 <div className="text">
-
                                     <h1>Meals Selection</h1>
                                 </div>
+                                <div className="meal_section">
+                                  {mealsItems.map((item, index) => (
+                                    <div className="meal_item" key={item} style={{ padding: 15 }}>
+                                      <div className="inner">
+                                        <input type="checkbox" id={`meal${index}`}
+                                          checked={item.selected}
+                                          onChange={() => handleMealSelection(index)}
+                                        />
+                                        <label htmlFor={`meal${item}`}> {item.name} </label>
+                                      </div>
+                                        <div className="meal_cost">${item.cost}</div>
+                                    </div>
+                                  ))}
+                                </div>
 
                                 <div className="input-container venue_selection">
-
+                                  <label htmlFor="numberOfPeople"><h3>Number of People:</h3></label>
+                                  <input type="number" className="input_box5" id="numberOfPeople" value={numberOfPeople}
+                                      onChange={(e) => setNumberOfPeople(parseInt(e.target.value))}
+                                      min="1" />
                                 </div>
                                 <div className="meal_selection">
 
                                 </div>
-                                <div className="total_cost">Total Cost: </div>
-
+                                <div className="total_cost">Total Cost: {mealsTotalCost}</div>
 
                             </div>
                         </div>
@@ -190,9 +314,6 @@ const ConferenceEvent = () => {
                     )
                 }
 
-
-
-
             </div>
         </>
 
@@ -200,3 +321,15 @@ const ConferenceEvent = () => {
 };
 
 export default ConferenceEvent;
+
+/*
+  tip added from copilot suggestions
+  TIP: For optimal code quality and easier debugging,
+  consider adding PropTypes to validate component props.
+  Example:
+    import PropTypes from 'prop-types';
+    MyComponent.propTypes = {
+      items: PropTypes.array.isRequired,
+    };
+  This helps catch bugs early and documents expected prop types.
+*/
\ No newline at end of file
diff --git a/src/TotalCost.jsx b/src/TotalCost.jsx
index 845abca9..4e4102ac 100644
--- a/src/TotalCost.jsx
+++ b/src/TotalCost.jsx
@@ -2,7 +2,8 @@ import React, { useState, useEffect } from 'react';
 import "./TotalCost.css";
 
 const TotalCost = ({ totalCosts, ItemsDisplay }) => {
-  
+ 
+  const total_amount = totalCosts.venue + totalCosts.av + totalCosts.meals;
 
   return (
     <div className="pricing-app">
@@ -12,11 +13,10 @@ const TotalCost = ({ totalCosts, ItemsDisplay }) => {
         </div>
         <div>
           <h2 id="pre_fee_cost_display" className="price">
-           
+           ${total_amount}
           </h2>
-         
-            <div>
-             
+            <div className="render_items">
+              <ItemsDisplay />
             </div>
         </div>
       </div>
diff --git a/src/avSlice.js b/src/avSlice.js
index cdd79aac..7cfff684 100644
--- a/src/avSlice.js
+++ b/src/avSlice.js
@@ -1,19 +1,59 @@
 import { createSlice } from "@reduxjs/toolkit";
-
+// 1. adding objects to provide data structure  
+// 2. create logic for incrementAvQuantity() and decrementAvQuantity() functions
+// 3. export all reducer functions and actions (ln-61 and ln-63)
 export const avSlice = createSlice({
   name: "av",
   initialState: [
-    
+    {
+      img: "./imgsFinalPractice/projector.jpg",
+      name: "Projectors",
+      cost: 200,
+      quantity: 0,
+    },
+    {
+      img: "./imgsFinalPractice/speakers.jpg",
+      name: "Speaker",
+      cost: 35,
+      quantity: 0,
+    },
+    {
+      img: "./imgsFinalPractice/microphone.jpg",
+      name: "Microphones",
+      cost: 45,
+      quantity: 0,
+    },
+    {
+      img: "./imgsFinalPractice/whiteboard.png",
+      name: "Whiteboards",
+      cost: 80,
+      quantity: 0,
+    },
+    {
+      img: "./imgsFinalPractice/signpost.jpg",
+      name: "Signage",
+      cost: 80,
+      quantity: 0,
+    },
+
   ],
 
 
-  reducers: {
+  reducers: {     // reducer functions:
+
     incrementAvQuantity: (state, action) => {
-      
+      const item = state[action.payload];
+      if(item){
+        item.quantity++;
+      }     
     },
     decrementAvQuantity: (state, action) => {
-     
+      const item = state[action.payload];
+      if(item && item.quantity > 0){
+        item.quantity--;
+      }
     },
+
   },
 });
 
diff --git a/src/mealsSlice.js b/src/mealsSlice.js
index faf8138a..fc672863 100644
--- a/src/mealsSlice.js
+++ b/src/mealsSlice.js
@@ -1,13 +1,19 @@
 // mealsSlice.js
 import { createSlice } from '@reduxjs/toolkit';
-
+// 1. including the meal items inside the initialState array
+// 2. adding the logic needed for function reducer toggleMealSelection
 export const mealsSlice = createSlice({
   name: 'meals',
   initialState: [
-   
+    { name: 'Breakfast', cost: 50, selected: false },
+    { name: 'High Tea', cost: 25, selected: false },
+    { name: 'Lunch', cost: 65, selected: false },
+    { name: 'Dinner', cost: 70, selected: false },
   ],
+  // reducer functions:
   reducers: {
     toggleMealSelection: (state, action) => {
+      state[action.payload].selected = ! state[action.payload].selected;      // uses [action.payload] to identify the item to update
     },
   },
 });
diff --git a/src/store.js b/src/store.js
index f05b9f8f..96cf5937 100644
--- a/src/store.js
+++ b/src/store.js
@@ -1,9 +1,15 @@
 // store.js
 import { configureStore } from '@reduxjs/toolkit';
 import venueReducer from './venueSlice';
+import avReducer from './avSlice.js';
+import mealsReducer from './mealsSlice.js';
+// 3. adding into the redux store the avSlice
+// 3.2 adding into the redux store the mealsSlice
 
 export default configureStore({
   reducer: {
-    venue: venueReducer,
+    venue: venueReducer,    
+    av: avReducer,    // same name as the key-value pair 'name: "av" in avSlice.js
+    meals: mealsReducer,
   },
 });