We have 3 new menu types available (under LAYOUT then MENU then WEBSITE PLACEMENT) that are not in the manual videos. All three use the "hamburger" icon you see on the mobile version of the sites:
Overlay - Uses the "hamburger" icon to activate the menu on desktop. When pressed the menu overlays the entire site. There are a whole host of adjustments for the overlay and hamburger icon if you scroll down the MENU panel under LAYOUT.
Top Responsive - A normal top menu with one key difference. You can set it to switch to the "hamburger" icon and overlay menu at a certain width. Most likely this width is where the menu runs off the screen. You can adjust the width at which it switches to the icon using the SCREEN WIDTH BREAKPOINT which is found under LAYOUT and WEBSITE CONTAINER:
Bottom Responsive - Same as above only the menu is on the bottom
Here's a video that explains everything in detail: