I am still learning Moi3d and I would like to again as some help with modeling logic because I am so stuck with Sketchup way of modeling.

Is there a way to create "Sketchup components or Groups" in Moi3D. For example if I have 4 tires or bolts in the model and I would edit one of the tyre it would modify also the rest of the tires in the model. In addition, is the are way to move the items as a Group for example creating an individual group for multiple Objects and moving all the Objects at the same time? Or how do you deal with this kind of items?

Are there some video tutorials how to use the Construction lines? I have been reading Command reference document but it is not clear to me for example how to offset construction lines.