To add a new extension group to the system, click on the button on the bottom-right corner of the panel.

A new window will appear, allowing you to enter a name for the 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:

For the changes to take effect, click on the button at the top-right corner of the screen and enter the date range over which calls should be updated reflecting your new extension configuration.

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