How do I add N/A to a selectable cell with an arrow?
 

I received a spreadsheet with a column of cells that are selectable by
clicking a down arrow or white triangle. It selects Y or N. I want to add
N/A. How do I open it? What is the function?

How do I add N/A to a selectable cell with an arrow?
 

They may have been created using Data|Validation.

Debra Dalgleish has some tips:
http://www.contextures.com/xlDataVal01.html

Patrick wrote:

I received a spreadsheet with a column of cells that are selectable by
clicking a down arrow or white triangle. It selects Y or N. I want to add
N/A. How do I open it? What is the function?

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Dave Peterson