Add or customize the author box with custom profile fields (https://mamamentje.nl/wp-admin/admin.php?page=bp-profile-setup). So this would mean that after enabling the checkbox on this setting page ( wp-admin/admin.php?page=buddyboss_theme_options | blog) you get the possible custom fields that are made/available on the bp-profile-setup. You can select them and they will show in the front-end. Now you see the biografe of the user that is set in the default wordpress profile (but the user has not access on default to this field) And it inherits the rights of who sees which fields.