Select Map (Markers) in Visualization Type.

You will have three tabs to customize: General, Groups, and Map Settings.

In the General tab, you can select the Latitude Column Name and Longitude Column Name, as well as the Group By column, which is used for series (Groups):

In the Groups tab, you get to pick the color for each group (in case the random default colors were not good enough):

In the Map Settings tab, you can change the visual representation of the Map itself. For example, you can select Topographical Map instead of Street Map.
Cluster Markers checkbox: allows us to combine markers that are close one to another into "clusters", to optimize their display on the map.
instead of seeing multiple markers on the same point, you will see a bigger mark (cluster) with a number in it (number represents the number of single marks within the cluster), as you zoom in - you will see fewer marks within the cluster, and more individual markers.