I need to create an object consisting of several objects.

What i need exactly is to have a Box (representing a transformer) and connecting switches to it, using arrows.
I am doing that sucessfully, however i would like to "group these items" and make them look and behave like one object.

I want these features:
1. the arrow connecting them to be invisible.
2. itmes to be attached to each other.
3 None of the objects can be resized.
4. the objects move together (stay grouped), and ONLY when the "transformer" is moved.

Also... i am experimenting with anchor points used with box objects. Is there a way to make them permanently visible, and to uniquely identify them?

I want to be able to select them programmatically or visually and apply logic directly on them e.g finding the outgoing arrow and doing further logic on that (Switch of supply to a connecting cable for example). can it be done?


thanks

Adrian