Hi and welcome.

One simple way would be to use a helper column in the first sheet to apply a unique number to the rows with no signature and then lookup formulas on the next sheet to show those.

Note this would work to show them only. When it comes to updating them with the signature you'd have to add that on the first sheet rather than the second.

If you need to be able to update them on the second sheet then you'd probably be looking at a VBA solution.

Attach a small desensitized version of your workbook and I can show you what I mean by the helper column approach.

BSB