VFP5

I've got a report, where the user may choose to group the detail records by up to N levels, or not group them at all. In the past, I've handled this by creating (N + 1) reports and then selecting the right report at run time e.g. Report0 (with no Group bands) if no grouping selected, Report3 (with 3 Group bands) if 3 grouping levels selected, etc.

What I'd like to do is create just a single report with the maximum number of grouping levels (i.e. "ReportN"), and suppress any group bands that may not be necessary for a given report run. Can anyone think of a way to do this? I'd rather not hack the .FRX unless it's fairly straightforward; for me it would probably take no more effort than building N reports.

We have a "Print When" option that lets us optionally print fields in a detail band. Is there any way to implement something similar for Group bands?