You can solve some of your problem by organizing your data into an Excel Table. Excel tables do thing by Column Header name and not by column position. Also Excel Tables automatically copy down formulas, so if you add the formula to a single cell in a newly-created column, it will populate automatically to all rows in that column. That's about as far as I can take the advice without actually seeing a workbook.

Attach a sample workbook. Make sure there is just enough data to demonstrate your need. Include a BEFORE sheet and an AFTER sheet in the workbook if needed to show the process you're trying to complete or automate. Make sure your desired results are shown, mock them up manually if necessary.

Remember to desensitize the data.

Click on GO ADVANCED and then scroll down to Manage Attachments to open the upload window.