I need to condense information that is in row 1(invoices) to show only one copy of each, until expanded. Upon being expanded it will show the original full layout of information. The following screenshot is an example of concept.
example.png
Any help is greatly appreciated!
Further notes :
This will span across several thousand rows and a dozen or so columns. I do not want to remove duplicates, simply hide the extra rows until I double click the cell invoice item.
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