I am looking for a formula (maybe filter) which reduces a list as users select item. Thinking it may be a combination of filter and unique formula.
List 1 is the master list of all the names.
B3:B5 is the selection area. As users select names, the selection list should reduce. So since Frank and Billing have already been selected, only Ronald and Karen should be available in B5 drop down list.
Thanks so much!
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