Attached Link: http://www.procedural.com/

Not easily, no.

The buildings consist of rectangular (irregular and highly variable) objects that have facade - texture files, and depending upon which version of City Engine you are using, they may have some roughly modelled features, such as balconies. But, they don't have glass windows. In the Pro version of City Engine, it is possible to create street lights and such, but not in the Vue version. So, ... there is no where to put lights.

To help answer some of your questions, I'll make some renders of the results, so that you can better visualize all this. But of course, you could just go to Procedural.com and take a look for yourself. (See above link.)  But keep in mind when you look at the items on their web page that you are looking at the products of the Pro Version - not the Vue version.