I still haven’t understood where the guy got the Mikrotik switch image from, since he only talked about such a Raw Disk image in the Cloud Hosted Router menu on Mikrotik’s software download webpage in his previous tutorial about virtualizing routerOS in GNS3.
Switch menu only is shown in devices that support it. CHR has no switch-chip inside, so you can’t simulate it… and you won’t see the menu option in Winbox.