Hello, it’s not my mod however I do use it.
This is already a feature by setting the ‘passengers’ to observer mode! They then only need to move their individual viewpoints to the cabin 
" 4. After Connecting
You’re now ready to fly! Only one person has control over throttles/flight controls at any given time. To transfer controls…
-
Click the
Give Controlbutton next to the person’s name in theConnection List -
Assign a keybinding in the MSFS controls settings to
Toggle Launch Bar Switch. When triggered, control will be given to the first person in the Connection List.
To restrict a person from messing with the aircraft, you can click the Observer button next to their name."