Hi Tod,

I assume that you signed up through Microsoft and not through a Partner.  With the user licenses you only need to have one User license, that then gets assigned to that user.  However, if you have created a new User Account for the Support mailbox that will also need a user license.  When you might want to look into is ctreating a shared Mailbox (as these do not require a license) or add the support address to your account as an alias.

Hi Tod,

Does the reply above answer your question?

If you have any other questions or concerns, please do not hesitate to contact us. It is always our pleasure to be of assistance.

Thanks,
Anna Guo