I would like to fill out some optional content in the Drop-down list, so you can directly select the mouse input, please tell me the method, thank Gege!
I can make this triangle, but I'm not going to enter it in the triangle.
Data--validity--sequence, enter the item you want to select in source, and you can separate it with a comma with a half. Male, female "
Of course, you can also enter the item you want to select in one area of the worksheet, and then in the Open Data Validation dialog box, after the "source"
Select the range of cells for which you have entered an alternative.
Supplementary answer: Enter those alternatives in the "source", such as "first grade, second grade, third grade", and these alternatives are separated by a half-width comma. It would be nice to be sure.