Hi, bernie426!
There's a bunch of ways to do this. Here's one:
BigClass_dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
BigClass_dt << Select Where( And ( Or (age == 13, age ==12), sex =="M")) << Colors(RGB Color(0,0.333,0.667)) << Markers( "\!U2642" ) << Clear Select;
BigClass_dt << Select Where( And ( Or (age == 13, age ==12), sex =="F")) << Colors(RGB Color(0.376,0.248,0.376)) << Markers( "\!U2640" ) << Clear Select;
If you had many color and marker assignments to do, you might want to be a little less explicit.