You can choose between 2 mobile navigation: Slideout and Slideout Advanced.
Slideout
This ist our basic mobile navigation. This menu shows per default all menu entries at once. If your navigation contains many sub-menu the mobile navigation may be large. User mey have to scroll this.
To solve this you can activate the option "Collapse navigation items" and set "Show level" to 1 (or any other number you like).
If it activated you can open and close the sub-menus by clicking on the double arrow.
Slideout advanced
This menu bases on Slideout but show the sub-menus differently. It shows only one menu level at once. You can navigate back and forth between the levels by tapping the arrows. Additionally, you can activate the page description (if available).
Here you can see the menu in action:
