To add a new extension group to the system, click on the button at the bottom-right corner of the panel. A new window will appear, allowing you to enter a name for your new group. Click to save the changes.

To add more groups, follow the same procedure. The new groups will be displayed in the panel, as shown below:

To apply any changes, click on the button at the top-right corner of the screen and enter the date range over which calls should be updated to reflect your new extension configuration.

When the update process has been completed, the following notification will be displayed: