How to exclude Ipad support for my App

Hi, guys i just finished my app ,but it looks really bad on the Ipad ,because i’m using scale with real word camera thats ok for me ,because I target mostly Iphones ,so how can i exclude the ipad support in iTunes connect or at least to be able to run it like Instagram on Ipad to be in a small box which simulates the Iphone screen. Thank you!

Project Settings > Player > Other Settings > Target Device