Hook um_pre_args_setup

um_pre_args_setup.php

<?php

/**
 * Hook: um_pre_args_setup
 *
 * Type: filter
 *
 * Description: Change arguments on load shortcode.
 *
 * @example https://github.com/ultimatemember/ultimatemember/blob/master/includes/core/class-shortcodes.php#L617
 * @link    https://docs.ultimatemember.com/article/1196-umpreargssetup
 *
 * @package um\core
 * @see     um\core\Shortcodes::load()
 * @since   2.0
 * @version 3.0
 *
 * @param array $args Shortcode arguments.
 *
 * @return array Shortcode arguments.
 */
function my_pre_args_setup( $args ) {
	// your code here.
	return $args;
}
add_filter( 'um_pre_args_setup', 'my_pre_args_setup', 10, 1 );