The plugin Maximenu CK Params manages the parameters for the links created with the module Maximenu CK. You just need to install and publish it and then a new tab appears with parameters in administration of menu links in Joomla! and also a new button in the module administration.
The plugin Maximenu CK Params avoid having to write some special characters in the menu link title, this has a big advantage : no more problem with special characters in the page titles, in components like Xmap, and no need to use Maxibreadcrumbs CK instead of native breadcrumbs in Joomla!.
Links of prerequisite extention: