Multi-Master takes a different approach to master keying.
Unlike other software that just generates a list of pinnings and bittings, Multi-Master builds a database upward from each change key in the key system to include all masters and submasters that operate that cylinder.
This method gives you the ability to completely manage each key system.
Screens are generated for entering location data of buildings, floors, doors/rooms, hardware, finish, etc. for all change keys, masters, and submasters in the key system.
There is no limit to the number of key systems you can create.
The number of key systems is limited only by the hard drive capacity of your computer.