By default, the platform does not have this option. You can use the following JavaScript code to set the "My Groups" tab as the default tab.

Please follow the steps below:

    1. Go to BuddyBoss - Theme Options.

    2. Under Custom Codes, enable JavaScript.

    3. Append the following:

/** CHANGE THE DEFAULT TAB ON THE GROUPS PAGE**/
jQuery(document).ready(function() {
 jQuery("#groups-personal .bb-component-nav-item-point").click();
});

    4. Click Save Changes.

Note: Any modifications are considered as custom work already. Know more about our Support Policy here: https://www.buddyboss.com/support-policy/

Screenshot: