Tips on Customizing WunderAutomation

How to Hide WunderAutomation Admin Menus

function plt_hide_wunderautomation_menus() {
	//Hide "Tools → Scheduled Actions".
	remove_submenu_page('tools.php', 'action-scheduler');

	//Hide "Automation".
	remove_menu_page('wunderautomation');
	//Hide "Automation → Workflows".
	remove_submenu_page('wunderautomation', 'edit.php?post_type=automation-workflow');
	//Hide "Automation → Re-Triggers".
	remove_submenu_page('wunderautomation', 'edit.php?post_type=automation-retrigger');
	//Hide "Automation → Categories".
	remove_submenu_page('wunderautomation', 'edit-tags.php?taxonomy=automation-category&post_type=automation-workflow');
	//Hide "Automation → Settings".
	remove_submenu_page('wunderautomation', 'wunderauto-settings');
	//Hide "Automation → Log".
	remove_submenu_page('wunderautomation', 'wunderauto-log');
	//Hide "Automation → Upgrade to Pro".
	remove_submenu_page('wunderautomation', 'wunderauto-upgrade');
	//Hide "Automation → Parameter test".
	remove_submenu_page('wunderautomation', 'wunderauto-parametertest');
}

add_action('admin_menu', 'plt_hide_wunderautomation_menus', 11);

Where do I put this code?

How to Hide WunderAutomation Meta Boxes

function plt_hide_wunderautomation_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Trigger" meta box.
	remove_meta_box('wunderauto-trigger', $screen->id, 'normal');
	//Hide the "Steps" meta box.
	remove_meta_box('wunderauto-steps', $screen->id, 'normal');
	//Hide the "Save" meta box.
	remove_meta_box('wunderauto-save-post', $screen->id, 'side');
	//Hide the "Schedule" meta box.
	remove_meta_box('wunderauto-schedule', $screen->id, 'side');
	//Hide the "Options" meta box.
	remove_meta_box('wunderauto-options', $screen->id, 'side');
	//Hide the "Upgrade to Pro" meta box.
	remove_meta_box('wunderauto-pro-promotion', $screen->id, 'side');
	//Hide the "Objects query" meta box.
	remove_meta_box('wunderauto-retrigger-query', $screen->id, 'normal');
	//Hide the "Schedule" meta box.
	remove_meta_box('wunderauto-retrigger-schedule', $screen->id, 'normal');
	//Hide the "Filters" meta box.
	remove_meta_box('wunderauto-re-trigger-steps', $screen->id, 'normal');
	//Hide the "Workflows using this Re-Trigger" meta box.
	remove_meta_box('wunderauto-re-trigger-using', $screen->id, 'normal');
	//Hide the "Save" meta box.
	remove_meta_box('wunderauto-save-re-trigger', $screen->id, 'side');
}

add_action('add_meta_boxes', 'plt_hide_wunderautomation_metaboxes', 20);