Tips on Customizing Block Patterns UI

How to Hide Block Patterns UI Admin Menus

function plt_hide_block_patterns_ui_menus() {
	//Hide "Block Patterns".
	remove_menu_page('edit.php?post_type=bpui_block_pattern');
	//Hide "Block Patterns → All Patterns".
	remove_submenu_page('edit.php?post_type=bpui_block_pattern', 'edit.php?post_type=bpui_block_pattern');
	//Hide "Block Patterns → Add New".
	remove_submenu_page('edit.php?post_type=bpui_block_pattern', 'post-new.php?post_type=bpui_block_pattern');
	//Hide "Block Patterns → Settings".
	remove_submenu_page('edit.php?post_type=bpui_block_pattern', 'block_patterns_ui');
}

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

Where do I put this code?

How to Hide the "Pattern Settings" Meta Box

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

	//Hide the "Pattern Settings" meta box.
	remove_meta_box('bpui_pattern_settings', $screen->id, 'side');
}

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