Entitlements managed through the Entitlements Service driver are called Role-Based Entitlements, or RBEs, because they are granted to users who are members of, or have a role in, an entitlement policy. Only the Entitlements Service driver uses Role-Based Entitlements and entitlement policies. The two other entitlement agents (roles-based provisioning and workflow-based provisioning through the User Application) use their own methods for assigning entitlements to users.
The Role-Based Entitlement functionality in iManager lets you manage the entitlement policies used by the Entitlements Service driver.