How to add one more author at the Sidebar?

Hi staeiou,

I really like your template, and I want to use it to build the website for our lab.
However, I want to list 2 authors at the sidebar, which means that I wish to add another author under the original author. May I use author1 & author2 to substitute the original single author? How can I do that at the layout?
If you could reply to me, I will be really appreciated.

Best