[Plugin: Events Manager] Move map marker

I have the latest version of Events Manager and WP. The addresses for our offices do not coincide with where the marker points on the Google Map. I need to either disable the need to use the Events Manager Google Map and just inlay an iframe map or have a moveable marker and still be able to input our address. In any case, I need a different map location than the one that automatically appears. I cannot move the marker.

Please advise as to how to do one of the two options above.

http://wordpress.org/extend/plugins/events-manager/