When you use the Place Hotlink command you can select either RVT or IFC. RVT is relatively straightforward and simple, but only really gives you basic geometry in the form of library parts. IFC is more complex and requires more set up and translators (too much to explain in one post), but results in native ARCHICAD elements like walls, slabs, roofs, etc as well as an endless amount of data.
For IFC I’d recommend checking out this from Rob Jackson:
We at BIM6x have provided a free RFA & RVT Geometry Exchange Add-on for ARCHICAD 21. We like to have people visit www.bim6x.com/solutions rather than going directly to our store so they can learn more about it. Especially the FAQs at www.bim6x.com/RFA-RVT-Add-On-FAQ
This add-on is not designed to replace IFC, just supplement it and allow quick import of common RFA files. Hotlinking RVT files this way only bring them in as a collection of objects, which is great for geometry checking and referencing, but for full interoperability use IFC.
If you have any questions at all, I handle all support queries personally so please feel free to contact me.
I am not able download this, its not showing option for download, its showing add to cart. If I clicked on that its showing like this.