The function below is a partial version of the correct one; I will exceed the
allowed characters for the field (too many arguments). I notice I am using
different arguments which could be combined as a range: IF(C16=5:7 for the
same results, in other words 5, 6 & 7 all = E20 as a result.

=IF(C16=5,E20,IF(C16=6,E20,IF(C16=7,E20,IF(C16=8,E 21,IF(C16=9,E21,IF(C16=10,E22,IF(C16=11,E22,IF(C16 11,E23,0))))))))

How can I build this function combining criteria as a range for a common
result?

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Thank you,

Trying Hard