Thank you MBphototech!
Yes, that was exactly what I wanted to know.
The photobooth is a full size Model 22 with complete equipment, and surely the film is usually loaded in the cassette and the booth itself is the "darkroom" for processing. But we need this booth for some arts stuff, not for commercial work. What we want to be able to do is: switch off the light in the room, get out an undeveloped strip, put in into a black bag, go to the darkroom, develop it there ourselves individually (with some manipulations on the pictures). Ok, it seems that this is possible with the b/w film... we will try then (the booth is not yet installed, I asked my question beforehand to et orientated).
Thanks one more!