I'm following the getting started tutorials for Unity and the Player Registration one shows how and where to put the Manager script but does not show where to put the RegisterPlayer script, nor is it in the SDK. I downloaded it but I still don't know where to actually put it so it runs. Any help would be appreciated.
If you look at the "AuthenticationScene" within that project you'll see the "RegisterPlayer_SampleScript" is attached to the RegisterPlayer_Canvas. It just needs to be attached to an object in the scene that it's required for in your game. Let us know if you have any further questions.