Hi dilipandey,

Both. Making it unable for them to see is easy. I simply turn the cells where the equations are to a font color of white and they cannot be seen. The part I'm struggling with is when the client unprotects the sheet to enable un-hiding of the additional columns, everything in the worksheet, including the equations I'm referring to can be accessed. Clearly, if they don't know the equations are there (because they can't see them), they would have no reason to mess with them. However, if they are able to select those cells they will be able to see something there (the contents appear like a shadow) and that may cause them to be curious, etc., etc. Ideally, I want to keep these cells protected (non-selectable) after they unprotect the sheet to un-hide the additional columns. I hope this clarifies my issue.