categorize "category" depending on login person

categorize "category" depending on login person

Dear all
 
I am new in serviceDesk  plus.
 
I have this senariyo :
 
an organization has diffrent IT project , each project has sub system , every sub system has other category and every subsystem has specific users.
 
organization -> has -> project ->has-> sub system ->has-> category and user(loggin user)
user in subsystem1 should not see categories for subsystem2.
 
Can i create this master details structure according to login user ? How?
 
tanx

                  New to ADSelfService Plus?