bbp_map_topic_tag_meta_caps( array $caps, string $cap, int $user_id, mixed $args )

function bbp_map_topic_tag_meta_caps( $caps, $cap, $user_id, $args ) {

	// What capability is being checked?
	switch ( $cap ) {
		case 'manage_topic_tags'    :
		case 'edit_topic_tags'      :
		case 'delete_topic_tags'    :
		case 'assign_topic_tags'    :
		case 'bbp_topic_tags_admin' :

			// Moderators can always edit
			if ( user_can( $user_id, 'moderate' ) ) {
				$caps = array( 'moderate' );
			}
	}

	return apply_filters( 'bbp_map_topic_tag_meta_caps', $caps, $cap, $user_id, $args );
}