Reasoning:

1. Engine functionality already exists - exposing to SQF would:
2. Allow certain functionality not able to script via sqf (return to formation, advance, etc)
3. Allow to create a custom interface for AI command
4. There is already: https://community.bistudio.com/wiki/showCommandingMenu

Suggested command:

wasSuccessful = executeCommandingMenu ["RscSubMenuClass","InnerClassToExecute"];

to be applied on https://community.bistudio.com/wiki/groupSelectedUnits

command contains the identifier for the engine what to execute
show and enable contains the conditions - not always both exists (aka true automatically)

Note: not all have an associated command (RscMoveDir, Communication, UserRadio, Radio, WatchDir)