In a report you sometimes end up with a heading for a group on one page followed by the detail on the next. Because different groups in the report have a varying number of detail lines, you don't want to set a page break after each group.
I have searched i the discussion group for a fix to stop this but with no result. One suggesstion is the 'Split Allowed' property but no one seems to think this actually does anything.
Anyway, I am posting this because I have found setting the Min Height on a group band will proxy what is required. Set the Min height of a group to a level that will include at least a few detail records and the problem of headings on one page and details on the next disappears.