Using SDP for Multiple Departments: Categories

For those of you using SDP for multiple departments, e.g. IT helpdesk and maintenance dept., how do you handle the different categories/subcategories that each department needs? For example, the IT dept. needs categories like printers, servers, keyboards and the maintenance dept. needs categories for security system, furniture, deliveries, etc. I am wondering how you organize these categories/subcategories.

I've considered two methods so far. 1) Make two categories - one named �IT� and the other named �Maintenance.� Then use subcategories under each one. Or 2) Use some sort of naming convention like IT.Printers, IT.Servers, Maintenance.Security, Maintenance.Furniture, etc. (That way all of the IT categories are separate from the Maintenance ones.)

Any suggestions are appreciated.

Thanks,
Amy