How to require touchscreen and multitouch support for Android app?

I am trying to get my first game on the Google Play store. The version in internal testing works fine, but I am noticing that it gives me the option to install it on my Chromecase, which shouldn’t be allowed, as that device does not have a touchscreen. When I check the generated app manifest I see that it doesn’t list touchscreen and multitouch as required.
How do I change that?

FYI I am unfamiliar with building Android apps; When I click the use custom Android Manifest option in the project settings it fails building.