Tips on Customizing Simple Calendar – Google Calendar Plugin

How to Hide Simple Calendar Admin Menus

function plt_hide_google_calendar_events_menus() {
	//Hide "Calendars".
	remove_menu_page('edit.php?post_type=calendar');
	//Hide "Calendars → All Calendars".
	remove_submenu_page('edit.php?post_type=calendar', 'edit.php?post_type=calendar');
	//Hide "Calendars → Add New".
	remove_submenu_page('edit.php?post_type=calendar', 'post-new.php?post_type=calendar');
	//Hide "Calendars → Categories".
	remove_submenu_page('edit.php?post_type=calendar', 'edit-tags.php?taxonomy=calendar_category&post_type=calendar');
	//Hide "Calendars → Settings".
	remove_submenu_page('edit.php?post_type=calendar', 'simple-calendar_settings');
	//Hide "Calendars → Add-ons".
	remove_submenu_page('edit.php?post_type=calendar', 'simple-calendar_add_ons');
	//Hide "Calendars → Tools".
	remove_submenu_page('edit.php?post_type=calendar', 'simple-calendar_tools');
}

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

Where do I put this code?

How to Hide Simple Calendar Meta Boxes

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

	//Hide the "Calendar Settings" meta box.
	remove_meta_box('simcal-calendar-settings', $screen->id, 'normal');
	//Hide the "Looking for more?" meta box.
	remove_meta_box('simcal-upgrade', $screen->id, 'side');
	//Hide the "Calendar Shortcode" meta box.
	remove_meta_box('simcal-get-shortcode', $screen->id, 'side');
}

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