Are we fetching all scheds from DB?
You have to use custom mongo queries over bb collections like in playout view. 
Collection must use searchWrapper.

```javascript
this.collection.fetch({
    success: function() {
    },
    error: function(e) {
    },
    data: {
        query: {criteria: {in_window: [start.valueOf(), end.valueOf()]}},
    },
});
```