Update 23 September 2026: the PRO beta registration mentioned in my first post has ended. SwitchBuilder PRO v0.9.4 is now available for US$39 one-time. It adds 3–5-position frames, editing of placed assemblies, batch changes, whole-model detail switching and quantity reports. The licence is for one user on up to two computers, with a 14-day refund policy. SwitchBuilder Free remains available. The product page linked in the first post has the current download, PRO checkout, terms and known limitations. Tested on SketchUp 2026 for macOS; feedback from Windows and older-version users is still welcome.