Hey. Why not re enable the profile click to highlight and it changes the printer profile, bed display on the work area and loads up the printer you want to use.
I believe if you click on a process, it will already highlight all of the models in the 3D view that are being handled by that process (same as the models listed in the "Select Models" window).
If you want to change the printer bed dimensions, then just click Edit Process Settings and change the "Select profile" choice at the top. That should update the size and display of the build platform.