Add source prefix to README

Author: CodeYan01

README.md

@@ -32,8 +32,23 @@ The Source Defaults filter can copy the following settings:
 - Stereo Balance
 - Sync Offset
 - Audio Tracks
+- Scene item settings
+    - Parent Scene Name
+    - Transform
+    - Show/Hide (Visibility)
+    - Show/Hide Transitions
+- Source name settings
+    - Prefix
+    - Option to apply prefix only if not yet applied
 
-For sources without audio, only Properties and Filters are available.
+For sources without audio, only Properties, Filters, Scene item settings, and
+Source name settings are available.
+
+To be able to copy scene item settings, you need to select the parent scene of
+the default source (because a source can be in multiple scenes). If there are
+duplicates of the defaults source, the bottommost one is used.
+
+Source name settings are only applied after the source is created.
 
 ## FAQ
 *Q:* What if I want to use the normal defaults instead of the one I configured?
@@ -97,6 +112,9 @@ default.
 media source. You can use this plugin to make it so Fit to Screen is applied to
 new ones. Remember to first set the Parent Scene in the filter settings.
 
+6. You want to prefix sources of the same type, so they appear in dropdown lists
+next to each other (e.g. "MS - Example Video") for Media Sources.
+
 ## Contact Me
 Although there is a Discussion tab in these forums, I would see your message
 faster if you ping me (@CodeYan) in the [OBS Discord server](https://discord.gg/obsproject),