Basically I have a Controller at my fathers house that i need access as i look after the place when they go away, and i have a controller at my house that i can control.
I can’t seem to use my Account login details: username, Password, and Email Address from my controller to set up a "other user on my fathers Controller.
Is the even possible. or do i need to create a completely new login with new email address.
Create a completely new user with a new email address on your father’s system. I imagine that will give you access to your father’s system with user privileges. Adding your account details to your father’s system wouldn’t make sense.