You can get the coordinates of a particular location clicking it on the preview of the globe and then use option to add a marker, dot label or other element to the map directly from the preview.

If you want precise coordinates you can use sites like GetLatLong or LatLong.net.

If you’re using the Pro version, in the settings page of the plugin you can enable the ‘Use OpenStreeMap’ option, in the Editing tab and when adding markers you’ll have a search bar to search for a particular location on the map.