By default, we do not have this option. You can use the following function code. Please see the steps below:
Note: Make sure to have a complete site backup before proceeding
1. Go to Appearance – Theme File Editor.
2. Under Select theme to edit, choose (BuddyBoss Child/whatever theme is active), then click Select.
3. Below Theme Files, select Theme Functions (functions.php).
4. Append the code just before the closing PHP tag “?>”:
function bbg_set_group_default_extension( $ext ) { return 'messages'; // Set the default extension to 'messages' } add_filter( 'bp_groups_default_extension', 'bbg_set_group_default_extension' );
5. Click Update File to save the changes.
Screenshots
Without Code (when opening the group, the default tab is Members):
With Code: