Update README.md

add copilot seat information in readme

Author: DevOps-zhuang

README.md

@@ -70,6 +70,22 @@ The language breakdown analysis tab also displays a table showing the Accepted P
 
 4. **Total Active Copilot Chat Users:** a bar chart that illustrates the total number of users who have actively interacted with Copilot over the past 28 days.
 
+## Seat Analysis 
+
+<p align="center">
+<img width="800" alt="image" src="![image](https://github.com/DevOps-zhuang/copilot-metrics-viewer/assets/54096296/69f9d97c-b96d-481d-a65d-591e588e37e1) >
+</p>
+
+1. **Total Assigned:** This metric represents the total number of copilot assigned seats within current organization.
+
+2. **Assigned But Never Used:** This metric shows the assigned but never used seats within current organization. the assigned time are also dispalyed in the below chart, recommend to check that date.
+
+3. **No Activity in Last 7 days:** never used seats. or seats used, but no activity in recent 7 days.
+
+4. **No Activity in last 7 days (Inluding Never used seats):** A table to display seats that have had no activity in the past 7 days, ordered by the date of last activity. Seats that were used earlier are displayed more prominently at the front.
+
+
+
 ## Setup instructions
 
 In the `.env` file, you can configure several environment variables that control the behavior of the application.