Aah, ok, I just read up on it on the QR website but I can't help you with how to do it.
For anyone else that is wondering, this is copied and pasted from QR's website:
How many QuickRewards Network accounts can I have?
QuickRewards Network allows 1 account per household. If your household has more then one computer you may use our sub-accounts option which will allow all family members to share one account. Signing up with more then 1 account without our permission will lead to closure of all accounts without payment. If for any reason you need a second account you must email us for permission first.
Can I refer myself or my family members in the same household?
Yes, you can all use one account through our sub accounts feature.
What are sub accounts?
Sub accounts will allow your family to share one account. You will all be able to combine earnings into one balance. Check out sub accounts feature once you login for more details and to set it up.