You group related processes together as an "Application". e.g SFA, Help Desk, Issue Tracking and so on.

The benefit of this is that Roles, Role -Privileges and custom information required in related processes can be combined together under an "Applications".

e.g roles like Sales Manager, Sales Coordinator and so on are specific to the SFA related processes while QA manager, Tester, Developer etc are specific to the Bug Tracking Applications.