How to add friends in Sush app via SnapChat?

here search app to invite friends to Sushi app you just have your username switch.app and like your username which you create when when you create an account so you can do that and then you can just share via any other links you can copy a link you can share on Snapchat whatever you like so you can do that so something like that and then you just send to your story or anything so you can try that uh yeah