User role mappings can be assigned individually to each user through the Role Mappings tab for that single user.
Role Mappings
In the above example, we are about to assign the composite role developer that was created in the Composite Roles
chapter.
Effective Role Mappings
Once the developer role is assigned, you see that the employee role that is associated with the developer composite shows up in the Effective Roles.
Effective Roles are all roles that are explicitly assigned to the user as well as any roles that are inherited from composites.