Step #1: Right click on the cell that you want to change (on Mac hold control + click on trackpad),
Step #2: Select “View more cell actions”, then choose “Data validation”,
Step #3: Correct the items as you’d like from the list (it’s highlighted in blue in the image)
Step #4: click the green “Save” button & you’re done!
If you have any other questions, please contact us 🙂