Edit 3d elements

I`m looking at the BricsCAD BIM V22 Academy episode 14. He shows how he opens the 3D model of an Air Treatment terminal and adds a Flow Connector to it so that pipes can be automatically attached to it, but I cant find this button in my Quad menu. Perhaps something changed between V22 and V24.

I cant open the 3D model in the block editor, so how can I modify models?

Attached is screenshot from my session and one from the youtube video, the button he uses to open the model in a separate session is marked.