Right way is add action to player or object and not on some attached objects created for this purpose. The best case is add action to player itself BUT this don't work in vehicles.

But its not right way to make actions and this a reason why I am create this ticket.

Arma is sandbox but with many strange restrictions. I dont want shooting from parachute, just wants "cut slings" action.

And what i can do if i need action menu when player in parachute?