When you add a Breakout Room, the active layout will be reproduced in the Breakout room you've added.
For example, if layout 1 is active when you create Breakout Rooms 1 through 3, then each of the first three rooms will use layout 1. If layout 2 is active when you create Breakout Rooms 4 through 6 then each of the last three rooms will use layout 2. Connect, by default, provides three breakout rooms with their own layout.
The best way to ensure a customized layout for your Breakout Rooms is to first delete the three default Breakout Rooms. Then create a new Breakout Room, with the layout you want active in the main Meeting Room.
To add customized information, first enter the Breakout Room of your choice. Click on your name in the Attendee Pod, from the Breakout Room view, and drag it to the Breakout Room. You may do this before the session begins.
Click the Breakout Room View button.
Enter the Breakout Room by clicking and dragging your name to the appropriate room.
Select Start Breakouts.
Add your desired content.
When you click Start Breakouts again during your session, the content will be in each Breakout Room.