I would like to make a structure similar with a data validation list in Google Sheet so the others users could contribute to it easily. For example, when I use the sheet I select one data validation structure and there is the following fruits: "banana, apple, orange", I would like to add "grape" at this list , but I would like to do this only by typing grape on the cell, but this would say the enter is invalid. How could I do something like that?
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