To edit properties of the selected group in the Groups section:
In the desktop application:
Select the Properties item in the context menu.
Select the Groups > Properties main menu item
Double-click.
After executing one of these operations the Group Properties dialog box opens. Make the required changes in group properties.
In the web application:
Select the required group to edit.
Make the required changes in group properties on the Properties side panel.
See also:
Creating Groups of Users and Working with Them | Changing User Group Properties