I have a spreadsheet that tracks credit card purchases. I am tracking this by order #. I've decided that I want to subtotal my spreadsheet by order number. For example, take order number 1234. Say I purchased 4 items in order number 1234. So in subtotaling, I come up with 3 levels. Level 2will be all of the order numbers with the price price totals. Upon clicking on the + sign on level 2, the group expands to show each individual item underneath the order. How do I continue to add to this when new orders arrive? In simple words...How do I get additional plus signs to appear without creating a completely different subtotal? Thanks!