I am new to Power Apps and trying to determine the best method for creating a form as shown below. Currently, the MasterForm and CommentsForm are using the same data source and are included on the "FormScreen". With this setup, I want individuals to enter general information in the MasterForm (with potential periodic updates to Status, Priority, etc.). The CommentsForm will have routine New Comments/Updates entered and added to the History of Comments. I have looked on the web but have not been able to find detailed information on what I am trying to accomplish. Currently, I have a Home Screen that contains a summary of records entered. Individuals can Create New, View or Edit individual ID (records) from the screen.

Having said this...
1. Should I use a Split Screen Gallery or is the current setup best?
2. As shown, this information would be for the same ID (record). Regardless of method, how do I link the Forms (or Split Screen Containers) to the record source?

Thanks