By default BuddyBoss Theme/Platform has no built-in feature to hide menu items on their group page. . This will require custom work as this will change the look and functional aspect of the product.
This can be done via a CSS snippet. Please follow the steps below:
1. Go to BuddyBoss > Theme Options
2. Under Custom Codes, enable CSS
3. Append the following:
.groups-nav li#photos-groups-li,
.groups-nav li#albums-groups-li,
.groups-nav li#documents-groups-li,
.groups-nav li#videos-groups-li {
display: none !important;
}
4. Save changes.