From Blizzard
No WoW Account Selector for Multiple Licenses—Second Login Disconnects First Player
Blizzard blue post · Kaivax
Bathered:
My dad and I both purchased the beta on our separate WoW accounts, but on the same battle.net account.
I’ve been looking into this, and I wonder if you can solve it by doing the following:
Log in to your Account page:
Go to the Games & Subscriptions section.
Scroll down to Starter Editions & Public Test Regions.
Click Create PTR Account and then confirm by clicking Create Account.
What I’m wondering is-- at that point when you log in, do you get a prompt for which one to use, allowing you to use the new one while Dad uses the original?