Co-Authors Plus plugin & Twenty Eleven Child theme

I’ve read quite a bit about this plugin. Sounds perfect. One goal for Inspiration Point has been to have multiple writers.

This plugin whould take me, a step closer. 🙂 If you visit my site, you will quickly discover that I’m using a simple child theme based on the old Twenty Eleven theme. The information is located in a styles.css file.

Here’s the question I’ve already discovered that I need a code snippet to add the needed functionality. Some guests will have a blog that I’d like to point to and others will not have anything.

What do I need to add to my child theme folder? Is it something I’d add to the style.css file? I’m hoping Daniel or someone could help. 🙂