Prevent W3 Total Cache caching dynamic parts of a page ?

Hi there

W3 Total Cache works great, thanks by the way because I had trouble with WP Super Cache because of my clusters ??

I just have a problem : some parts of my pages (on https://www.madmoizelle.com – if you are logged in, there’s a “member info” below the logo for example) are dynamic and if the plugin caches the page on a non-registered user (for example), the page is displayed as if I’m not logged in. It’s the same for the poll in the sidebar, if you already answered it…

I could ask W3 Total Cache not to cache index.php, but this “member info” space is on each page of the website.

Is there a way to prevent W3 Total Cache not to cache some parts of the page ? (I think WP Super Cache had an option like this)

Thanks !
(and sorry for my poor english :))