My widget can draw markers on the map with a click of the mouse, see:
As of version 3.0.0 the ‘EnableDraw’ feature is included and from what I am reading exactly what you are in need of. Please see the documentation as well.
What do you mean exactly with creation of markers?
With the maps widget from the appstore you can use a marker image list for example. This allows you to assign a different marker for a different enum value, so a dynamic marker based on the data.
Sorry I wasn’t clear : I mean I’d like to allow the user to create a markers on the map ; for example ! click on it somewhere, and get a microflow executed, smthg like that …