// add another step in the panel store
step = pane.addStep();
Container owner = this.getContentPane();
// here is the file chooser panel as an InstructionSet
final FileChooserPane jfc = new FileChooserPane(owner, "");
jfc.setModeOpen(true);
// add the file chooser panel set to the InstructionsPane at the next available empty step
pane.addInstructionSet(jfc);
// here is how to add button with action