Thank you for your question.
We are not sure what you meant with multi-level navigation, but our theme supports mulitple header navigation levels, which you can see bellow.
I mean like more than one navigation menu in the header. Like a navigation menu in the top bar AND another in the regular area of the header to the right of the logo. Is there a string of code you can send me to replace the address, phone number and email address in the top bar of the second header to be a different navigation menu?