Lookup on a Many to one sheet

Okay, this may be a bit tricky, so I would appreciate your help. I will be creating a new sheet, and accessing both of the sheets below. Let's call the screenshot at the top, SheetA, and the one at the bottom SheetB. Now, SheetA is a "one to one" with the TDLs listed in the column on the right, there is only one entry on each row. I will be pulling my TDLs from that column. Now some of the data I require is on SheetB, that is where it gets tricky. I circled 2 entries that contain Multiple TDLs. How can I create a formula that can see those, and let's say I want that email column, for TDL-111, TDL-252 and TDL-292…. all 3 despite being in the same row on SheetB would all provide the email address that is listed in that sheet. Can that be done, and how do I do it? This is necessary, as we have many people that manage multiple TDL, so there are some sheets that are based on people rather than TDL that we need to manage this way.

Thanks in advance for all your help!!!!

SheetA

2025-06-04_12-12-00.png

SheetB

2025-06-04_12-08-32.png

Sherry Fox

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Best Answer

  • DKazatsky2
    DKazatsky2 Community Champion
    Answer ✓

    Hi @SherryFox,

    Index/Connect was just a typo, it's actually Index/Collect - give this a try.

    =INDEX(COLLECT({Sheet B Email}, {Sheet B TDL}, HAS(@cell, ProjectIteration@row)), 1)

    Make sure to use the correct range names if you already have them created.

    Hope this helps,

    Dave

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