User not found to add to private group

[SuzanneLevine]

I'm trying to add/invite users to my private group. They have registered but when I search for them, their names do not show up. Once a person registers with ArcGIS online can they be immediately searched or is there a lag time? I'm using IE9. Are there other steps that need to be taken or could there be another issue?
Thanks.
Suzanne

[MikeMinami · Accepted solution]

The user needs to set their profile to public, otherwise it can't be found.

Thanks,

Mike

[PaulLohr]

I think there must be at least one more variable as to why a user cannot be seen. I can show you a case where two users have both their profiles set to 'organization' visibility (Who can see your profile?). One can be found, the other cannot.

[MikeMinami]

You might want to check if the role of the user permits them to join groups.

[SuzanneLevine]

Thank you... that worked!