As mentioned, anytime you need an answer to a question about your new mh, you really need to let us know exactly what mh you have...year, make, model....as not all are made equally.
Also as mentioned, if your mh is fairly new (year wise) your converter/charger should keep your 4 house 6v batteries charged while plugged into shore power and from the engines alternator when driving.
Charging the chassis batteries while on shore power may or may not be done with the converter/charger....some do, some don't. A Trik-l-start will take care of this problem if yours doesn't.
Hope this helps
Ron