Formula IF doesn't contain

Hi,
We have a lot of clients submitting info via forms, many are regular clients, i want to be able to write a formula that tells me when specific clients have NOT submitted a form, so that we can chase them up. Is something like this possible?

Thanks,
Ross

Hello @rbichener,

If the forms have the client name (oe Id) as a required field, could you link the form board to the client list board and just filter the client board on empty data?

Cheers,
Laurent