What is the simplest method for passing a click action to an app I am testing on AWS Device Farm?

Once the app loads, I'd like to be able to click one button (login as new user) and that's it. (Or even just click some X,Y co-ordinates)

Everything I have read so far seems far more robust and complex than what I need to do. While I could do this easily via Remote Access, it would be better if I could automate it.

If someone could point me in the right direction, I'd be much obliged.