JE, sorry to have upset you. All I would like to know is whether or not there are instructions in the B3e FM for the securing of the controls when leaving the rotors running.
Really not that complicated. The B3 2B1 specifically states you can't leave the controls, the B3e does not. Therefore, those of at least average intelligence could surmise that there is no such prohibition in the FM for the B3e.
I would just like to clear up, (as you say there is no prohibition in the B3e manual for leaving the ac with rotors running), what the actions required in doing so are.