Appian display interface

Hi Community,

I’m working on a UI inspired by the attached mockup. I’m aware that Appian doesn’t natively support a fixed/sticky footer within an Overlay, nor a perfect 2x2 grid inside a standard buttonLayout.

However, I’m determined to get as close to this look as possible. Has anyone tried:

• Using a columnsLayout with Cards as buttons to simulate the 2x2 grid?

• Using a Header Content Layout inside the overlay to force the bottom bar to stay visible?

I'd love to hear any 'outside the box' ideas to bypass the standard layout constraints and achieve this specific action-bar aesthetic.