I know there is a plugin but I don’t want to use it because I’d have to click, ungroup, select carefully and it’ll be a hassle. My builds have like 80 parts
you know in the explorer when you right click on something a menu appears? And in that menu there is a button to select the children of the selected thing
I’m not too sure if this option will work for you but I noticed that you are using the beta feature for lua draggers, I suggest you either disable it or restart studio. The feature could possibly be bugged knowing it isn’t fully developed yet, for you at least I suppose.
They won’t connect because both of the surfaces are set to Smooth. (I assume because I can’t tell in the video.) Set the smaller part’s surface that is touching the brick to Weld and this will keep them together. (I’m wrong)
Another way you can do it is using WeldConstraints. Insert a WeldConstraint into one of the parts then click on the blank area beside Part0, then click one of the parts, then the blank space beside Part1 and click the other part.
What’s going on here is that there’s a Humanoid in one of the objects, that’s what the red outline is telling you.
This is a hack that exists in the draggers to prevent you from accidentally getting your humanoids stuck to the floor when Join Surfaces is turned on, which I carried forwards from the old draggers.