Mike, yhanks for answer!

Yes, I have carefully studied these instructions and I have figured out how to assign hotkeys in other applications.
The problem is that MOI3D has a slightly different principle (or I don't understand something) - I can't bind switching projection windows (for example) to some keyboard combination - this or that script is required (which are described at the very beginning of the topic).

And how to implement this - I don't quite understand here (((