Just read the manual! It says:
Q: I dont understand how to use/install my multiples Cd-Keys ?
A: You need more than 1 set of Cd-Keys (1 set = Classic Key +
Expansion Key). You just have to enter your keys in mm.MultiKeys.ini
and also edit your delays in the mm.BOT.ini
Q: I dont understand how to use/install my multiples Cd-Keys ?
A: You need more than 1 set of Cd-Keys (1 set = Classic Key +
Expansion Key). You just have to enter your keys in mm.MultiKeys.ini
and also edit your delays in the mm.BOT.ini