Check in Options> Add-On Manager to see if the accessory is available. You may need to go to Help> Archicad11 Goodies and download it first (I think our NZ edition comes with all these add-ons already to go), then go to Add-On Manager and make sure it is loaded.
I think...
(and it looks like you are starting a new topic each time - just hit the "reply" button to add to an existing thread, or the "quote" button to reference previous comments)
Yes, USA users must download and install the accessories add-on goodie (and download and install the separate library!!).. Be warned that some of the roof add-ons can really add to your poly count so be judicious. Good luck.
Nattering nabob of negativism 2023 MBP M2 Max 32GM. MaxOS-Current