supporter_lvl_taxonomy.php

// Add Supporter Levels (Taxonomies)

// Register Custom Taxonomy
function supporter_lvl_taxonomy() {
	$labels = array(
		'name'                       => _x( 'Supporter Levels', 'Taxonomy General Name', 'text_domain' ),
		'singular_name'              => _x( 'Supporter Level', 'Taxonomy Singular Name', 'text_domain' ),
		'menu_name'                  => __( 'Supporter Levels', 'text_domain' ),
		'all_items'                  => __( 'All Levels', 'text_domain' ),
		'parent_item'                => __( 'Parent Item', 'text_domain' ),
		'parent_item_colon'          => __( 'Parent Item:', 'text_domain' ),
		'new_item_name'              => __( 'New Level', 'text_domain' ),
		'add_new_item'               => __( 'Add New Level', 'text_domain' ),
		'edit_item'                  => __( 'Edit Level', 'text_domain' ),
		'update_item'                => __( 'Update Level', 'text_domain' ),
		'view_item'                  => __( 'View Level', 'text_domain' ),
		'separate_items_with_commas' => __( 'Separate items with commas', 'text_domain' ),
		'add_or_remove_items'        => __( 'Add or remove items', 'text_domain' ),
		'choose_from_most_used'      => __( 'Choose from the most used', 'text_domain' ),
		'popular_items'              => __( 'Popular Items', 'text_domain' ),
		'search_items'               => __( 'Search Items', 'text_domain' ),
		'not_found'                  => __( 'Not Found', 'text_domain' ),
		'no_terms'                   => __( 'No Levels', 'text_domain' ),
		'items_list'                 => __( 'Levels list', 'text_domain' ),
		'items_list_navigation'      => __( 'Levels list navigation', 'text_domain' ),
	);
	$args = array(
		'labels'					=> $labels,
		'hierarchical'				=> true,
		'tax_position'				=> true,
		'public'					=> true,
		'show_ui'					=> true,
		'show_admin_column'			=> true,
		'show_in_nav_menus'			=> true,
		'rewrite'					=> true,
		'show_tagcloud'				=> true,
		'hide_empty'				=> true,
		'show_in_rest'				=> true,
			'capabilities'			=> array(
				'manage_terms'		=> true,
				'edit_terms'		=> true,
				'delete_terms'		=> true,
				'assign_terms'		=> true,
			),
	);
	register_taxonomy( 'supporter_level', array( 'supporters' ), $args );
}
add_action( 'init', 'supporter_lvl_taxonomy', 0 );



add_filter( 'radio_buttons_for_taxonomies_no_term_supporter_level', '__return_FALSE' );