Tips on Customizing Real3D Flipbook Lite – 3D FlipBook, PDF Viewer, PDF Embedder for WordPress

How to Hide Real3D Flipbook PDF Viewer Lite Admin Menus

function plt_hide_real3d_flipbook_lite_menus() {
	//Hide "Real3D Flipbook".
	remove_menu_page('real3d_flipbook_admin');
	//Hide "Real3D Flipbook → Flipbooks".
	remove_submenu_page('real3d_flipbook_admin', 'edit.php?post_type=r3d');
	//Hide "Real3D Flipbook → Add new".
	remove_submenu_page('real3d_flipbook_admin', 'post-new.php?post_type=r3d');
	//Hide "Real3D Flipbook → Categories".
	remove_submenu_page('real3d_flipbook_admin', 'edit-tags.php?taxonomy=r3d_category&post_type=r3d');
	//Hide "Real3D Flipbook → Authors".
	remove_submenu_page('real3d_flipbook_admin', 'edit-tags.php?taxonomy=r3d_author&post_type=r3d');
	//Hide "Real3D Flipbook → Import / Export".
	remove_submenu_page('real3d_flipbook_admin', 'real3d_flipbook_import');
	//Hide "Real3D Flipbook → Settings".
	remove_submenu_page('real3d_flipbook_admin', 'real3d_flipbook_settings');
	//Hide "Real3D Flipbook → Add-ons".
	remove_submenu_page('real3d_flipbook_admin', 'real3d_flipbook_addons');
	//Hide "Real3D Flipbook → Upgrade to PRO".
	remove_submenu_page('real3d_flipbook_admin', 'real3d_flipbook_upgrade');
	//Hide "Real3D Flipbook → Help".
	remove_submenu_page('real3d_flipbook_admin', 'real3d_flipbook_help');
}

add_action('admin_menu', 'plt_hide_real3d_flipbook_lite_menus', 1000000000);

Where do I put this code?

How to Hide Real3D Flipbook PDF Viewer Lite Meta Boxes

function plt_hide_real3d_flipbook_lite_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Shortcode" meta box.
	remove_meta_box('r3d_post_meta_box_shortcode', $screen->id, 'side');
	//Hide the "Help" meta box.
	remove_meta_box('r3d_post_meta_box_help', $screen->id, 'side');
	//Hide the "Get More Features with Real3D Flipbok PRO!" meta box.
	remove_meta_box('real3d_pro_features', $screen->id, 'normal');
}

add_action('add_meta_boxes', 'plt_hide_real3d_flipbook_lite_metaboxes', 20);