OpenStreetMap - can I change the default zoom parameter for maps ?

Dear Joomshaper Team, I use OpenStreetMap for a Website but I have a problem with the zoom value if I open the map. The zoom parameter is always the same (that's my impression) and only a part of set locations is visible. You can adjust the map (zoom level) afterwards, but is it not possible to specify the map section (zoom level factor) for a special map from the outset so that a customer can see all locations without further zooming? I have not find a parameter in the addon to determine a default zoom factor for a map. Can you help me? Is there any posibility using Custom CSS Code? Best wishes Uwe