RentalHive - Allow multiple categories to be selected in the List a Property Form

[yevhen]

Please try this PHP snippet but please note that it can require further customization

add_filter(
	'hivepress/v1/forms/listing_submit',
	function( $form ) {
		if(isset($form['fields']['categories'])){
			$form['fields']['categories']['multiple'] = true;	
		}
		return $form;
	},
	1000
);