Add New Custom Tab for Group
1. Please go to your FTP/CPanel, and go to folder "wp-content/plugins"
2. Create a new file and name it with "bp-custom.php" file. If you already have it, no need to create a new one. Please just open it
3. Put snippet from the link below on the file
4. You can change Name Tab, Slug, Position, URL etc on that snippet and save the file.