I am not sure if I understand. You have to make sure two things: 1. That the workpiece zero in your 3D model is zeroed at the same point in your real machine’s workspace, and 2. that your 3D model is not bigger than the maximum workarea (816 x 816 mm for Woodworker model, 1220 mm x 816 mm for Journeyman). See here for explanation.
I don’t know why it goes to the right rear corner, but I would think it is because your g-code program tells it to do so.