Auto Form/Schema

First, I’m new to coding and Meteor so I apologize for the basic questions. I’m looking to present one set of options on a field in my form based on a selection from a previous field. For example:

category: {
type: String,
allowedValues: [“Top”,“Bottom”,“Suit”,“Tuxedo”],
label: “Category”
subCategory: {
type: String

I want to present a different sub-category based on the value from category…