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The layout styles are applied hierarchically starting at the Session.
You can let all your Destination screens adopt the Session's values.
In this picture, destination PRO_MAINT is using the session's inherited layout and dimensions: 
The screen looks like this:
If we make the panel smaller, it looks like this:
If we override the layout to Flow and size the screen as above, it will look like this:
If we resize it to make it smaller, the size of the contents of the screen are reduced to fit:
