My older sister would like to join the combine. Does she just put my handle in the multi-account space when she registers? Or do I have to send an email to the multi-account department as well?
Kyle avoids join requests like the plague.. so if, after both accounts are approved, you are not listed as a registered multi in your account settings, you should send him an e-mail. Otherwise, just noting the multi's handle when signing up should be sufficient.