public function populate_columns( $existing, $item, $column ) {
		$meta_data = get_post_meta( $item['attendee_id'], Tribe__Tickets_Plus__Meta::META_KEY, true );

		if ( isset( $meta_data[ $column ] ) ) {
			return $meta_data[ $column ];
		}

		/**
		 * Allow plugins to remove support for checkbox field values being displayed or override the text shown.
		 *
		 * @since 4.10.4
		 *
		 * @param string|false $checkbox_label Label value of checkbox that is checked, return false to turn off label support.
		 */
		$checkbox_label = apply_filters( 'tribe_events_tickets_plus_attendees_list_checkbox_label', __( 'Checked', 'event-tickets-plus' ) );

		if ( false === $checkbox_label ) {
			return $existing;
		}

		// Checkbox support
		$checkbox_parts = explode( '_', $column );

		if ( 2 !== count( $checkbox_parts ) ) {
			return $existing;
		}

		$key = $checkbox_parts[0] . '_' . md5( $checkbox_parts[1] );

		if ( isset( $meta_data[ $key ] ) ) {
			return $checkbox_label;
		}

		return $existing;
	}