I can´t for the life of me make out what the FMA says in those pictures. But it certainly doesn´t look like any speed is selected on the MCP (0), so it would be far-fetched to assume that the APFCS is in MCP SPD mode in those pictures...
Don´t forget that this is a version of the 777 made to run well on a handheld telephone at acceptable speed, it is not designed to complement your type-rating course for flying the real thing. There is a payware 777 available to run on the desktop version on X-Plane, this will definitely add a more complete choice of autopilot/autothrust modes.
Good luck, Jan