My theme used to support several menus, and I had made two (one for the front page and another one when “accessing” the website). However, with the newest update my theme now only supports one.
Normally, I have the Primary menu on the front page and then I have made another menu (called “Indskolingen”) on the other pages. The other menu has been made via the plugin called “Conditional Menus” which can be accessed through “Appearances -> Menu”