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Help!!! I am a complete novice. I am using Excel 2007 and have created lists for several columns, I want it to do 2 things:

1. If a certain option from the drop down list in column C is selected then I want columns D E and F to be mandatory to have content (non specific)

2. If any of the other options from the drop down list in column C are selected (except a particular one) then I want columns D E and F to be greyed out (do not have to be completed)

It is text not numeric data.
Any help would be wonderful! Many thanks

It's difficult to make cells mandatory, as a blank cell is acceptable - so you may have to arrange the data in a different order OR if it uses calculations you could use conditional formatting to hide the results and perhaps display a message whilst the mandatory fields remain unpopulated.  Greying out would again use conditional formatting, but I'd also use data validation to prevent any data being entered into these cells.

Question found in question pool implying the original expert was unwilling or unable to answer the question - apologies for the brevity of the reply, please do ask any follow up questions you may have - I'm more than happy to help further!
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Aidan Heritage


I have provided first hand support since `95 for Microsoft Office majoring in Word and Excel - support for all versions from 2 onwards. I'm based in the UK, so please allow for time differences when asking me questions from other parts of the world!


My background is in the insurance industry and call centre areas, but have been called upon to provide many varied solutions.

I'm educated to UK A level standard, but as I left school some 30 years ago that is rather irrelevent - university of life has provided more of a background!

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