I don't follow. Apple Calendar shows a sheet to create a new event. The sheet has a primary action (Add) and a discard action (Cancel). If you hit Cancel after

I don't follow. Apple Calendar shows a sheet to create a new event. The sheet has a primary action (Add) and a discard action (Cancel). If you hit Cancel after adding some data, you get an action sheet "Are you sure you want to discard this new event?" with the options to "Discard Changes" and "Keep editing" The primary and secondary actions on a sheet are not the same (different modality and context) as the options on a modal action sheet (where we usually have to confirm or discard).