Attaching methods to javascript functions then passing them to variables

I have a javascript function (using NodeJS but not particularly relevant here) like this:

var method = {};
method.create = function(){
  console.log('Method was created')
}

method.create.function1 = function(){
  console.log("This is method 2")
}

method.create.series = ['one', 'two', 'three'];

If I call method.create.function1() it correctly runs that function and console logs: This is method 2.

If I call method.create.series[0], I am returned: "one"

However, if I call:

 var app = method.create();
 app.function1() // returns undefined

I've tried:

var method = {};
method.create = function(){
    console.log('Method was created')

    this.function1 = function(){
      console.log("This is method 2")
    }

    this.series = ['one', 'two', 'three'];
}

but this doesn't work at all. Anything I can do to be able to pass these methods along to a new variable?