Make sure to check out this whole series on conditional/faux summaries from Kevin Frank, with input from others in the community. They can really take your FileMaker reporting to the next level when you think outside the layout parts provided.
Recently we’ve looked at two methods to generate a “faux” subsummary to address a shortcoming of FileMaker native subsummaries… namely that in a multipage report you can have orphaned entries at the top of a given page with no indication of what parent entity they belong to. One limitation of both the above approaches is that they only worked with fixed-height report rows. Well today we have a nice, outside the box solution from Daniel Wood that does not suffer from this limitation.