Good morning community! I wanted to share a little snippet that I've found useful in providing a grouping to collapse reports when you don't have a field to group by.
group.0.valueexpression=STRING("Collapse")
group.0.valueformat=HTML
textmode=true
Will give you this:
![0690z000008K92gAAC.jpg 0690z000008K92gAAC.jpg](/t5/image/serverpage/image-id/44897i9BFA33001CAFEC99/image-size/large?v=v2&px=999)