Moldings around doors and windows

[Beach Bum]

Hi. This is my first time on the Forum. I have Architectural 2014. I have created a plan, but I want to change the moldings (woodwork) around the doors and windows to see what different styles of molding would look like. But I can't seem to change them. They moldings look like they match what is called the "Today's traditional." How can I change the moldings, or is that not possible?