Rotating components

If I got that correctly, you want to know how to put motors in other positions than the default.

You can see on the picture below most items in RA have more than one connecting point, they are the small green things you can see on the picture of the snapper2 here. One of them is solid green and the others are translucent. The solid one is activated. If you click on a another one, that one will be the active attachpoint. You can it connect then to the groundplate or to any other free end of elements that allow items to be attached to it.

Sometimes you need to rotate the item in the preview picture, to see all of its attach points. To do so, left click and hold anywhere on the preview picture and move your mouse.