Mega Menu in Employee Center Pro Kiosk portal

[Tapas Dash]

Hi, I'm fairly new to Employee Center Pro Kiosk and just started exploring about it in SN docs and in my PDI. Apparently this is a new functionality by SN for deskless and shift workers. Usually in Employee Center portal (/esc) , by using advanced portal navigation, we can see the mega menus like HR, IT, Get support etc below the header. For Employee Center Pro Kiosk portal (/eck), I created an advanced portal navigation, and that is dictated by the OOTB "Employee kiosk" taxonomy. So I would expect a mega menu to appear below the header. But it doesn't appear. Can anyone please guide me on this, what am I missing here?