Your website is horrible.
I spent an entire afternoon looking for information about how to add and retrieve data to/from a dropdown list control that should be intuitively available in close proximity to it's "Overview" page (after a lot of stumbling around I found where the "add" part was but the "retrieve" part was not found. I finally gave up and pinged Support. Another day is lost.).
And this isn't the first time I spent several hours searching for fundamental class information such as that which would be locatable in a traversable complete class hierarchy. I couldn't even find signatures to constructors for basic components such as RadProperty.
I hate to say it but your website is approaching the near-uselessness that plagues MSDN.
The difference is that I'm paying a truckload of money for the Telerik library. I dread using new controls for your product because I know what an exercise in rage it's going to be figuring out how it works. You laugh, I know. I understand. But it's the truth. I need to wear a mouth guard or pop some Xanax every time I come here. BTW, can I get a refund?
If not, please rewrite your website with your clientele in mind. Assume they know nothing that you know about your product.
My suggested solution is to use a visual model such as is demonstrated at: https://docs.telerik.com/devtools/winforms/telerik-presentation-framework/class-hierarchy/class-hierarchy-overview.html.
You could even start out with a scrolling 400 square-foot wall chart. I wouldn't care if it took a half-hour to download. I'd still be saving time.
And that's both my feedback and feature request that'll wind up in the digital dumpster.