How to Hide Atarim: Visual Website Collaboration, Feedback & Workflow Management Admin Menus

function plt_hide_atarim_visual_collaboration_menus() {
	//Hide "Collaborate".
	remove_menu_page('collaboration_task_center');
	//Hide "Collaborate → Tasks Center".
	remove_submenu_page('collaboration_task_center', 'collaboration_task_center');
	//Hide "Collaborate → Settings".
	remove_submenu_page('collaboration_task_center', 'collaboration_page_settings');
	//Hide "Collaborate → Permissions".
	remove_submenu_page('collaboration_task_center', 'collaboration_page_permissions');
	//Hide "Collaborate → Support".
	remove_submenu_page('collaboration_task_center', 'https://atarim.io/help');
}

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

Where do I put this code?