Bulk Add Term Meta

functions.php

/*
 * Bulk Add Term Meta
 */
function theme_create_term_meta( $term_id, $tt_id, $taxonomy ) {
	if ( $taxonomy == 'rtcl_category' ) {
		$types = array( 'sell', 'buy', 'rent' );
		if ( ! empty( $types ) ) {
			foreach ( $types as $type ) {
				add_term_meta( $term_id, '_rtcl_types', $type );
			}
		}
	}
}
add_action( 'create_term', 'theme_create_term_meta', 10, 3 );