That is not possible as far as I know, only individual calendars can be
overlaid.

What are you trying to achieve that you cannot by creating a new group
calendar that includes all of the calendars in your separate groups?

--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact.
ALWAYS post your Outlook version.
How to ask a question: http://support.microsoft.com/KB/555375


After furious head scratching, Access Joe asked:

| Outlook 2007 - I know you can overlay individual calendars. Does
| anyone know if it's possible to Overlay GROUPED Calendars? If so,
| how would I do this?
|
| Thanks!