Playing 2 Characters On One Account?

[MissLanna]

Hi there fellow Eorzeans! Maybe you can help me.

http://support.jp.square-enix.com/fa...5&id=5382&la=1

According to this thing (at least in my understanding), you can play 2 characters from the same account at the same time as long as you do x, y, and z. Buying another PC copy of the game isn't a big deal to me, but how do you actually set it up so that two characters on the same account can be played? Is it MAYBE as easy as just registering an additional account code on Mog Station?

Here's what I'm trying to do -- my dad and I share an account. We each have one character, both characters on Diabolos server. We want to be able to play together rather than, I have to logout for him to play, etc.

Has anyone been able to do this? If so, how'd you do it? Do you have to contact SE to set this up? I've been looking for a phone number or something and I cannot find it, and the email I sent to them was hit with the usual "well it's been awhile we're sure you figured it out by now bye" thing.

Any and all info would be appreciated thank you! Also, bonus points if someone who's actually done this can verify stuff. Oh, and do you pay 1 monthly fee or one for each character?

Thank you!

EDIT:

I have a feeling that even if I get this to work, one of us would have to create a new character on the extra account to be able to play together, huh? :/ And I couldn't move his character onto that new account, could we...