Howto add default parameters to component in the form.io editor

I would like to add a default file location to the file upload control so that when someone drops a new file upload control onto their form, the values are already populated.

Is that possible ?

I found that I was able to add the file component to a custom section in the editor, and specify default storage and file location at that point... i.e.

var builder = Formio.builder(document.getElementById('builder'), {}, {
            builder: {
                custom: {
                  title: 'Extra',
                  weight: 20,
                  components: {
                    file: {
                      title: 'file',
                      key: 'file',
                      icon: 'file',
                      schema: {
                        label: 'Upload',
                        type: 'file',
                        key: 'file',
                        input: true,
                        storage: 'url',
                        url: 'https:yourfilelocation'
                      }
                    }
                  }
                }
              }
            })