I have annotated a script, with a couple of items to ponder concerning your question.
names default to here(1);
dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
New Window("EX",
hlis = HList box()
);
// You can create stand alone platform objects, making them invisible or not,
// and then append their report object
biv_obj1 = dt << Bivariate(invisible, Y( :Weight ), X( :Height ) );
hlis << Append (Report(biv_obj1));
// This method appends a static version of the platform's output display.
// That is, most red triangle options are not available.
//This method works fine, but is more complex than it has to be
biv_box = Hlist Box( biv_obj2 = dt << Bivariate( Y( :Weight ), X( :Height ) ));
hlis << Append(biv_box);
// Platforms can be directly appended to objects within a display window.
hlis << append(biv_obj2 = dt << Bivariate( Y( :Weight ), X( :Height ) ));
Jim