Hello,
You can use authentication profiles to isolate your players
More information here: Manage profiles
Example:
// Player 1
var options = new InitializationOptions();
options.SetProfile("Player1");
await UnityServices.InitializeAsync(options);
// Player 2
var options = new InitializationOptions();
options.SetProfile("Player2");
await UnityServices.InitializeAsync(options);
The profile can also be set in the Authentication service directly prior to authenticating.
You could probably use the clone folder name to feed the profile in your use case, or any other information ParrelSync might offer for this.
Let us know if that works and if you have any other questions