Attached is part of a model I'm working on in illustrate, I want to demonstrate open/close of the panel. The rotation should be around the highlighted part (in red). How to achieve this in Illustrate? how can it understand that those two parts are linked (panel and underneath cover)? and make any movements accordingly? ("select CSYS" doesn't help here, because I don't have separated part to chose as reference. It's all one part, and the other linked with the other part)
