Yes, you can. We need to make sure that the other person agrees with this before we do.
1) Email us at email@example.com and copy in the person you want to add on to your account. Make sure you use the email address you use for your Bulb account, so we know it's you.
2) The person that you've copied in on the email needs to reply to confirm they're happy to be added to your Bulb account.
3) That's it - we'll sort the rest out for you both.