Am I trying to add users to a group correctly?!

Experts (Dave?!):

As posted yesterday, I'm finally able to log in to the RHS Admin Console.

I've been testing the Users areas. I'm having trouble adding users to a group other than the RobAdmin. Please let me know what/if I'm doing wrong. My procedure:

1) Access the Users panel:

2) Click the upper Add to add new group writers:

3) Click OK. The writers group appears in the Group pulldown:

4) Type in new user Kurt:

5) Click Add. Note how the selected group snaps back to RobAdmin!

6) Click Yes to confirm the user addition:

7) Observe how Kurt is now added to the RoboAdmin group. (D'oh!).

8) Observer how Kurt is NOT added to the writers group. (D'oh d'oh!)

Is the above the expected behavior? If so, how does one add users to a non-RobAdmin group?!?!?

Thanks in advance!.

-Kurt