Tasker Settings app

Hello. I am on the latest RC candidate and want to create a profile for switching DND on and off at particular times and vibrate only for particular contacts while in DND. Do I need to install the Tasker Settings app? I did try, but when I went to install, Android prevented me. It stated that the app was dangerous since it was outdated.

Also, is it possible to have DND be a Profile condition?

Thanks for any and all help.