Unfortunately, this feature is not included in BuddyPress. It will either require custom coding or an extra plugin to meet your requirement.
If you wish to have more options to better control the groups from your BuddyPress website, please give a look to this plugin:
As this issue is related with BuddyPress, it’s best if you try to reach the plugin authors. They will be more informed and better suited to help you.
To go further, we invite you to post your request on their support forums:
Some topics from their forum address a similar issue and might catch your interest:
We remain available for all support requests related with the use of your theme.