Remove Apple ID from Macbook Pro and replace with another.
Our office inherited a Macbook Pro with Apple ID active and enabled, I have been able to access this ID and update OS to OS X (10.10)
How do I:
1. Delete Apple ID from MacBook - still allow previous Macbook owner to use current Apple ID on other devices.
2. Add new Apple ID which I will populate with new email and password credentials.
I certainly don't want to mess up previous owner's Apple ID access.