Need to concat/join the columns that coming in the cell.

As seen below (first screenshot), these two column(s) or columns like these are created dynamically.

That comes from the Mapping file (second screenshot). That tells us which column will have what logic.

Now, I get the logic and know “Combination” is the key word that identifies these kinds of column in the table (it can be multiple for different columns)

How to implement it?