Team member centered

Hello!
First of all, I love your plugin.
I am using it to display 9 team members on my page. Since I am using a 4-column layout, the last team member ends up being alone on a row. I was wondering if it was possible to center this last team member in the middle of the row? It is right now located to the right of the page and I would like to change that.

Thanks for your help!