Tips on Customizing Create by Mediavine

How to Hide Create by Mediavine Admin Menus

function plt_hide_mediavine_create_menus() {
	//Hide "Settings → Create by Mediavine".
	remove_submenu_page('options-general.php', 'mv_settings');

	//Hide "Create Cards".
	remove_menu_page('edit.php?post_type=mv_create');
	//Hide "Create Cards → All Create Cards".
	remove_submenu_page('edit.php?post_type=mv_create', 'edit.php?post_type=mv_create');
	//Hide "Create Cards → Add New Create Card".
	remove_submenu_page('edit.php?post_type=mv_create', 'post-new.php?post_type=mv_create');
	//Hide "Create Cards → Recipes".
	remove_submenu_page('edit.php?post_type=mv_create', 'recipe');
	//Hide "Create Cards → How-Tos".
	remove_submenu_page('edit.php?post_type=mv_create', 'diy');
	//Hide "Create Cards → Lists".
	remove_submenu_page('edit.php?post_type=mv_create', 'list');
	//Hide "Create Cards → Recommended Products".
	remove_submenu_page('edit.php?post_type=mv_create', 'products');
	//Hide "Create Cards → User Reviews".
	remove_submenu_page('edit.php?post_type=mv_create', 'reviews');
	//Hide "Create Cards → Settings".
	remove_submenu_page('edit.php?post_type=mv_create', 'settings');
}

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

Where do I put this code?

How to Hide the "Create" Meta Box

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

	//Hide the "Create" meta box.
	remove_meta_box('mv-create', $screen->id, 'normal');
}

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