Clicking on System class like DateTime -> Object Explorer or .NET framework source

Just playing w/ Rider again (had got an earlier build but wasn't useable)

This latest EAP is pretty stellar.

Question:  When I click on a class like DateTime it currently does nothing.

How can I configure Rider so that when I click on DateTime, it shows me Object Explorer, or better asks me if I want to download .net framework source code?  I'd like to look at source + esp method params etc.

Thanks