I came across an action in the regular program and verified it exists in the beta. I’ll explain and will attach a screen recording showing.
I was creating circular pins to connect two pieces. One piece would have the pins the other the receptacles. It makes 3D printing much faster if I can assemble rather than print full size.
So, I had my four sides. I sketched a circle on the bottom edge of one corner of one side. I did a copy added a circle to the different independent sides. I highlighted each circle then extrude all. The moment I began the extrusionall sides involved auto-unioned.
I created a screen recording within the beta.