Display Multiple Fields in Group Level in Master/Detail report?

I feel like I'm missing something very basic when it comes to creating simple reports using the report wizard. I've got a variety of reports "Grouped by" Contacts. I would like to include the Contacts' names and email address in a single group level, but can't seem to do this. Is this capability supported in Dynamics CRM Online reporting?

For example

Joe Smith / jsmith@mail.com

detail 1

detail 2

detail 3

Mary Andrews / mandrews@email.com

detail 1

detail 2

detail 3

Etc....