You can also have a look at the Phundament Playground Code in the meantime.
The link points you to a giiant configuration example.
The README should guide you through the setup, a good way to debug is first to try to output a debug string for the fields you want to change and then generate the actual input field.
It’s highly recommended to use the batch command or at least the yii/gii commands, since this saves you so much time during development.