code: def set_widgets(self):
          
          self.clear()
          self.layer_mode = self.parent.step_kw_layermode.selected_layermode()
          self.layer_purpose = self.parent.step_kw_purpose.selected_purpose()
          self.set_current_state()
  
          # Set the step description
          self.set_wizard_step_description()
  
          # Set the left panel
          self.setup_left_panel()
  
          # Set the right panel, for the beginning show the viewer
          self.show_current_state()
docs: Set widgets on the Multi classification step.