Help with operating the Goflight MCP-PRO

Hi All,
I just upgraded from my GF MCP-Advanced to MCP-Pro. There are a lot of features that I have no idea how to use, but that will come with a bit of studying.

However, coming from the "mcp-advanced world", I don't know how to set up a NAV - with GPS,
I have LNAV (I think that is for Canada) and VNAV. Neither one of these functions on the FS Default Learjet-45. Perhaps because this airplane doesn't support these features. SO, how can I select NAV, as I could on the MCP-Advanced. (Kind of obvious I'm not a real pilot)

Any advice would be appreciated - thank you all!

RhodeNet (Chuck)