How to Hide Dadevarzan WordPress tender plugin Admin Menus

function plt_hide_dadevarzan_wp_tender_menus() {
	//Hide "Tender/Auction".
	remove_menu_page('edit.php?post_type=tender');
	//Hide "Tender/Auction → All Tenders/Auctions".
	remove_submenu_page('edit.php?post_type=tender', 'edit.php?post_type=tender');
	//Hide "Tender/Auction → Add New Tender/Auction".
	remove_submenu_page('edit.php?post_type=tender', 'post-new.php?post_type=tender');
	//Hide "Tender/Auction → Tender Categories".
	remove_submenu_page('edit.php?post_type=tender', 'edit-tags.php?taxonomy=tender_category&post_type=tender');
}

add_action('admin_menu', 'plt_hide_dadevarzan_wp_tender_menus', 15);

Where do I put this code?