Yes, you may use 2 potential ways for that:
1) via the Help Tours app: Just add the info about the Cookies using.
2) via the Designer app. Use the Injections area to insert the wished HTML, CSS and Javascript code for that.
hello there
Personally, I don't use any, but a CMS must use them, I imagine? And it seems to me that it's obligatory to put them on a website.??
thanks a lot
best regards
florian