If you have more than one keyboard, or a set of pedals, available to plug into Box Of Stops, each of these will be assigned to a different bank.
If you have more banks than you have input devices, this is fine too. In that case the 'spare' banks can be played using [[Coupler|couplers]]. This is the same idea as a 'floating division' sometimes seen in a large traditional organ- e.g. a set of reeds that can be coupled from both Great and Swell.
[[File:Great-bank.png|border]]