Don't know a thing about that control, but once on the macro page, try typing in 500 and hitting the search key (or down arrow key). On a Fanuc it will take you to the 500 series macros.
On a Fanuc P9101, etc. have nothing to do with macros. You can call up a subprogram with M98P9101 or call up a subprogram and assign values to variables within the subprogram by using a G65 Macro Call such as G65P9314A.5K-1.1B.02F.009
There are 9000 series macros (on a Fanuc), but they would be referred to by something like Parameter 9101 bit 4 or possibly Para 9101.4
I suppose if the thread subject was Parameters you probably could write P9101.4 and everyone would understand what you meant.