You can configure the size of Alarms Panel (see 알람 패널) with included videos for each layout separately.

To do it, follow the steps below: 

1. Go to the desired layout. 
2. Open the Alarms Panel and set desired sizes of videos, and of the panel itself (see 알람 패널).
3. Switch to the Layout Editing mode (see Switching to layout editing mode). 
4. Exit the Layout Editing mode and save changes (see Exiting Layout Editing mode).

The Alarms Panel will always open as you have specified it for this layout.