"Pinning" windows

[McPhale]

Describe the problem/motivation

Is it possible to have a layout wherein a particular window is locked to a certain size/location and will not resize if other windows in the workspace are added/removed?

Describe the solution you'd like

For instance, I'd like the phone mirror screen on the left to retain it's size/location when emacs (right) is minimized or moved to another workspace:

Not sure if this would be a new feature or if it's possible with the current tooling and I just don't know how to do it. Setting it to floating is the closest I can figure out right now but it's not quite what I'm after.

Thanks!

Alternatives considered

No response