Customers need to be able to add columns beyond what is "built in." In this case, I have a much-loved doctor who has worked for a long time at our hospital. Over the years he has been honored for work anniversaries, his birthday, and now his retirement. Each of these tributes is noted in the Notes field but I can't add NOTES to my column headings which would allow me to accurately assign the gift without having to open up each tribute to find the correct category. 

Beyond this particular example, customers need to be able to customize ANY window to fit their organizations needs. End-users should decide these things not the designer/programmer.