I am using the IF(Contains formula to look at values in the Numbers to Include column, which is a multi-select drop down column, and it if finds the value to add a number to the Office Phone column.
=IF(CONTAINS("Main Office: 303-932-0757", [Numbers to Include]@row, "303-932-0757", ""))
This formula is in the Office Phone cell for the current row.
I am getting an Incorrect arguments error.