Hide sidebar on Mutiny?

I read that now we can automatically hide the sidebar on the theme "Mutiny", is that correct? How to do it ?
Thank you

You can auto hide the panel by finding empty space on the panel, right click, and under panel preferences there is an auto hide option, you may have to move stuff temporarily on the Mutiny panel to get space to right click


I installed Plank, I put it on the left and it suits me. Thanks in any case for the explanation