In SSRS Report Builder, how to only show something when it's the last row of a group?

Question

I am trying to build a report to only show specific notes below the LAST line in a grouping, but that grouping may only be part of a data set.

Quick example: I have two orders with three rows of information each. After each row, I have a row that is hidden, but when visible displays NOTES. These two orders are separated by a "line number". So the data set has 6 rows, but I need to distinguish if a row is the last row of a certain line number, so that the row can then be shown.

Answer 1

I know this is years ago but maybe someone else needs to do this. Add the row below footer and for its visibility use this Expression:

pretty simple really: =countrows("DataSet1")<>rownumber("DataSet1")