// app.js

Mongoose = require('mongoose');
Schema = Mongoose.Schema;
ObjectID = Schema.ObjectId;


// Booth.js

Users = new Schema({
      type: ObjectID
    , ref: 'UserModel'
});

Slots = new Schema({
     Name: String
    ,Users: [Users]
});

BoothSchema = new Schema({
    Name: String,
    MaxUsers: Number,
    Slots: [Slots]
});

BoothModel = Mongoose.model('BoothModel', BoothSchema);