Tips on Customizing Virtual Classroom – Video Conferencing & Online Meeting with BigBlueButton

How to Hide Virtual Classroom & Video Conferencing - BigBlueButton Admin Menus

function plt_hide_video_conferencing_with_bbb_menus() {
	//Hide "BBB Rooms".
	remove_menu_page('bbb_room');
	//Hide "BBB Rooms → All Rooms".
	remove_submenu_page('bbb_room', 'edit.php?post_type=bbb-room');
	//Hide "BBB Rooms → Add New".
	remove_submenu_page('bbb_room', 'post-new.php?post_type=bbb-room');
	//Hide "BBB Rooms → Categories".
	remove_submenu_page('bbb_room', 'edit-tags.php?taxonomy=bbb-room-category');
	//Hide "BBB Rooms → Settings".
	remove_submenu_page('bbb_room', 'bbb-room-server-settings');
	//Hide "BBB Rooms → Get Pro Version".
	remove_submenu_page('bbb_room', 'bbb-room-pro-version');
}

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

Where do I put this code?

How to Hide Virtual Classroom & Video Conferencing - BigBlueButton Meta Boxes

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

	//Hide the "Moderator Access Code" meta box.
	remove_meta_box('bbb-moderator-code', $screen->id, 'advanced');
	//Hide the "Viewer Access Code" meta box.
	remove_meta_box('bbb-viewer-code', $screen->id, 'advanced');
	//Hide the "Recordable" meta box.
	remove_meta_box('bbb-room-recordable', $screen->id, 'advanced');
	//Hide the "Wait for Moderator" meta box.
	remove_meta_box('bbb-room-wait-for-moderator', $screen->id, 'advanced');
}

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