Manage Phone Services Steps:
1. Navigate to the Phones tab
2. Click the phone you wish to modify and then click Phone Services.
3. Click an Available Service then click the > button for it to go over to the Enabled Services.
4. To remove a phone service click an Enabled Service and press the < button for it to become an Available Service.
5. You can enable/delete service faster by clicking the >> and << buttons respectively to add/remove all services.
6. Click save when done.