I need to add a ArcGIS Online User to my ArcGIS Online Group. My group is setup through an organizational account, however, the user I am trying to invite is a member of a different organizational account. They just recently became a member of their organizations, organizational account. I have tried searching for their name but I am not seeing it.
Any tips and/or directions to get invite and/or give them direct access to my ArcGIS Online Group?
First off, are you the owner of the group? If so...
From the group page -> Members Tab:
When you click "Invite Users", have you unchecked "Only search for members in [organization name]"?