Customizing Meteor User Collection

[Mona786]

I am trying to attach a schema to meteor user collection but that is not showing up. I am using autoform 6 and simpl schema,.as described at https://github.com/aldeed/meteor-collection2. I am able to add the user collection using Houston.add_collection(Meteor.users); Houston.add_collection(Houston._admins); and that works. However, when I click on create user it gives services etc... I would like to create users with username, email, roles and password. I added the roles packages, it does give me an option to role to the role collection but I am at a loss in trying to get the user collection to show the role field. I am new to meteor please help. Thank You.