Google maps - drawing lines between locations

Hey guys,

here’s what I would like to achieve:

Lines between points. I tried the widget “Advanced Google Maps Widget Only” though I couldn’t set it up successfully, I think it needs an update. When I tried to set the latitude of the marker, I just couldn’t select the attribute “Latitude”

GoogleMaps Custom Marker works, though it’s functionality is still different from what I want to achieve.

Does anyone have any thoughts on this? Or perhaps can point me in the right direction, or has even done/fixed this before: I’m all ears!