How do I add graphics to Numbers pop-up menu
Sometime last year I created a spreadsheet to record values with a corresponding cell to select an arrow to indicate if the reading is rising, lowering, etc. I was trying to add another arrow option, but for the life of me I cannot figure out how I was able to add the arrows to the drop down list. I tried on both my iMac and iPad. Does anyone know how to do this?
Below are screenshots of the pop-up formatting window and the selection window.
iPad Pro, iPadOS 18