In this case, you can add from:
Wordpress Dashboard -> Appearance -> Menus -> Language Switcher -> the two languages side by side.
And if you want a dash between them you will need to add a small css snippet in the Additional CSS Tab as long with a unique class that every menu element have.
Right click on the menu to which you want to add a dash -> Copy the menu id. in my case this is “menu-item-204” then go to the Aditional CSS.
WordPress Dashboard -> Appearance -> Customize -> Additional CSS
Then add this css to it:
.menu-item-204 a::after {
content:"/";
}
Note: Even if in my case the unique id of that menu button is “menu-item-204” most likely you will have a variation.
P.S – What I offered you there is a small template that you can later modify at will. To edit that code you will need some CSS knowledge.
If you have other problems related to the plugin, please address them to me
Kind regards,