6. In the picture above, the Hunt List says that when a call comes in, only extension 100 will ring.
7. Click the "+ Add" button by "Extensions to ring", select the extension you would like calls to ring on at the same time as extension 100, then click "Add".
8. The extensions will then appear next to each other, as shown below:
9. Repeat step 7 to add more extensions. Once all your extensions are added, click on "Update Hunt List" at the bottom.