Child Account & Parent Accounts

[uReside.com]

Is there anyway in vBulletin to add child accounts to a Parent account. Literally and functionally?

I've got an ATV park that has Adults and Children. Example:

Mom and Dad sign up at the park and get an adventure pack which includes their kids who are 16 & 17 years old. Everyone needs a forum account cause the forum is for members only. If the account is not renewed, I would like one way to be able to disable all the members. Furthermore - the current userbase is in Joomla (integration into that would be awesome but I am already aware of the intricacy of that.

So does anyone know how I can allow parents and children to have accounts tied to each other? Like a main account and sub accounts. Or a group - with accounts.

Any ideas?

[Agathadaimon]

Is the registration?

[uReside.com]

Believe it or not - they're all going to be manually input.

This is because I have one userbase in joomla. I will have another userbase in vBulletin - but this will not be open to freely registering. PITA I know. Fortunately, I won't be the one signing these people up. I just need the functionality to easily be there.