creating new MRBS groups

[simmthd3]

I'm working with the MRBS calendar system, and have it set up with LDAP for my school. Right now, everyone who logs in with their username and password is a level 1 user, so they have rights to book a room in any area (since the only levels of authentication are 0-anonymous, 1-default user, and 2-administrator). I was wondering if anyone could help me add code to some of the files to give permissions to users, allowing them access to only book rooms in certain areas, but not the right to book any area. I assume if i created different user groups (a different authentication level for each), it would be easier to add to the already created functions and "make permissions", so to speak.