How to create an event or reminder?
If you have trouble creating an event or reminder check first if you have added your calendar to macOS/iOS and if NotePlan has access to your calendars.
On Mac
Click on any time slot on the right sidebar displaying a timeline. A dialog should open where you can define the details of your event. Fill out at least the title, check if the time is right, and hit "Save":
On iOS
Tap on the menu icon top right inside a daily note, then "New Event / Reminder":