Mark a location with a pin in Maps on Mac
You can drop a pin at a location to get directions or help you find it again. Pins are temporary, but you can save a location to use later by marking it as a favourite.
Drop a pin
In the Maps app
on your Mac force click the location you want to mark with a pin. Maps drops a red pin
at the location on the map. You can have only one dropped pin on the map at a time.If the pin isn’t where you want, remove it and drop a new pin
To see information about a pin click it. To close the information card click outside it.
Remove a pin
You can remove a pin that you drop .
In the Maps app
on your Mac, scroll in the map to show the location you marked with a pin.Choose Edit > Remove Pin.
You can also Control-click a pin, then choose Remove Marker.
To clear pins added from search results (orange pins) click the Close button 
in the search field.