I just updated my Macbook Pro to Mojave 10.14.6 and noticed that I can no longer set a second alert on events I add to my Calendar. I'm not using any external calendars or accounts, just my iCloud. I can still set second alerts on my iPhone, just not my computer.
1 Answer
Depends what is your default calendar settings. If you select iCloud Calendar then you will have plus sign option next to the alert.