How do I make parts transparent

hey I was gonna make a pants but I wanna make the shirt transparent because its pants
but I don’t know how to make parts transparent

can someone please help me with this

Wait let me understand this. You wanted to make pants that are transparent from a shirt template?? Just erase the stuff you don’t want on your pants.

(In case you’re using the shirt template, just use the pants one and cut the parts you don’t want.)