Map Zoom

I would like to set my map zoom further out so you can see our other locations.

Here is a link to the site. http://www.alliedservices.com/locations/

We have a pin on a location but you cannot see it on the default view. How can I set the default zoom less so you can see all of our locations?

https://ww.wp.xz.cn/plugins/leaflet-maps-marker/