Step 1. Add Google Map in post/page

In order to add created Google Maps plugin in post/page, copy/past the shortcode. Or add like a widget from widgets page.

Step 2. Edit Google Maps

2.1 Google Maps Options.
2.2 Markers - Google Map

Click +Add New Marker and create unlimited markers for your specific places . Right Click on map wherever you want marker to appear. Hold pressed and change marker’s position moving mouse.

2.3 Polygons - Google Map
2.4 Polylines - Google Map
2.5 Circles - Google Map