I'm learning how to use the Empire Tree more and more each game to help me do things easier. But what I'm confused about is pinning; specifically, ALL I want to show most the time is my Shipyards, so I can quickly click on them and give build orders or waypoints, but, even if I pin them, I can't get rid of ALL the other tons of stuff listed; like builder ships, metal mines, ect. In fact, I see no difference when they are pinned or not, they still show or don't show on the tree just like every other thing in the gravity well/planet.
Is there a way I can pin something, and when I collase that portion of the tree, ONLY the things I've pinned still show?