Enter your credentials.
Click on the "PBX" icon, then click on the "Call Center" tab and "Ring Groups" from the drop-down menu.
Drag and drop the extensions you want to add to this Ring Group. You can arrange the order by dragging the extensions up or down, which is useful if you set the Ring Group to use the “One by One” Ring Strategy.
Press the "Accept" button when you are done.
Settings that can be enabled or disabled on this Ring Group:
When you have made all of the necessary adjustments, click on the "Save" button.
Then reload VitalPBX to finalize your changes.