I teach introductory MS Excel at a university and have to run around and help students with their questions. The majority work on Macs and use MS Office.

Sometimes MS Excel is very helpful and gives suggested formulas in a drop down column while other times it does not.

It is usually always shown on a PC while those using Macs are hit-and-miss with suggested formulas.

Does anyone know if this is a feature that can be turned on or off?

I don't have suggested formulas in my version of MS Excel (14.3.7)...but I could have sworn that it was there before.