Dynamic Field Find and Replace

[Dave]

Hi all

I have the following data set:

The filed "Income Protection" is a Find and Replace taking the employee number and appending the value found in a specific column of another sheet. 

Is it possible to have this as a dynamic Find and Replace?

Instead of me specifying the Fields in the spreadsheet by ticking "income Protection" on the list in F&R, can the operation instead use the field "Allowance Plan" to determine which column to append by matching the type with the appended field name?

Any help as always is appreciated

Dave