Geoff is correct. All you need is to set Visibility, Hidden property to TRUE and then set your ToggleItem.
If you set Hidden = TRUE and forgot to set the ToggleItem, you will NOT be able to expand the report because it won't put a toggle in there.
The ToggleItem is usually the Name property of a textbox/label on a higher row/level (can be same group, but must be a different line).
Catadmin - MCDBA, MCSA
"No, no. Yes. No, I tried that. Yes, both ways. No, I don't know. No again. Are there any more questions?"
-- Xena, "Been There, Done That"