I am double-dog sure that you are supposed to turn the crank backward before firing the shutter. I have just an Automat or K4-something without the deliberate-double-exposure feature, but I think this is true for all crank Rolleiflexes (and similar crank TLRs such as Yashicamat). From the HTML-ized Automat manual at
https://www.butkus.org/chinon/rollei/rolleiflex_automat/rolleiflex_automat.htm :
Swing out crank (4), turn it until it stops with one continuous swing (5) and then back again until the next stop (6)!
It is now locked, until the automatically wound shutter is released. The simple rule then reads:
If the crank can be turned, it must be turned - once in each direction until it stops, until it locks!
When advancing the film to exposure No. 1 some 4 to 5 complete crank turns are required. During the last turn a slight resistance of the mechanism must be overcome as the counter moves from 0 to 1. If it should happen that the crank reaches starting position when it stops, reverse direction one full turn, so that it locks!