Should you have decided to create a group without allocating it a phone or extension number you can do this at a later time by doing the following.
- Click Settings
- In the Users & Groups tab click Groups.
- Select the group for which you wish to assign a phone/extension number.
- On the group’s page select Phone and click the + Phone Number or + Extension button. A pop up box will appear which will allow you to choose the phone or extension number to assign to the group.