I have Concept phase projects that can result in multiple Phase 1 projects being generated from one Concept Review.
I want to calculate the time in the Concept Phase for the first project from that Concept (the Approved Gate 0 UID), but mark it N/A for any subsequent references to that UID.
I figured out the formula below which does what I want, but it anchors the COUNTIF in the first row ([Approved Gate 0 UID]$1), which precludes me from making it a Column Formula.
Is there another way to write make this work without cell or absolute references? I'm hitting a wall….
=IF(COUNTIF([Approved Gate 0 UID]$1:[Approved Gate 0 UID]@row , [Approved Gate 0 UID]@row ) = 1, [Gate 1 Approval Date]@row - [Gate 0 Approval Date]@row , "N/A")
Thanks in advance,
Mike