This doesn't seem to be obvious - in many other map objects, 'clustering' by zoom level is a fairly easy feature. The last post I can find about it in QlikSense is from 2015 - so things might have changed?
I can control the map points with a variable slider ( I created rounded points in SQL server and calculated the distance to the closest -as the slider is increased, more points are included.)
Can the map 'zoom' level be accessed as a variable or related to in a similar way, or is it a case of creating 5-10 point layers and setting their visibility to zoom?