Is SAP Work Manager a role based Application ?

Hi Everyone,

1. Is SAP work manager a role based ?

2. Can Planner and Technician have different screens (  with different fields like Technician has Maint. work center and Technician may not have Work Center) ?

3. Can we assign different Assignment Type for different users? say example Planner required Person responsible as assignment type and Technician require Work Center as assignment type

Thanks,

Raj Kumar