simple_multistep-8.x-1.x-dev/config/schema/simple_multistep.schema.yml

field_group.field_group_formatter_plugin.form_step:
  type: field_group.field_group_formatter_plugin.base
  label: 'Form step formatter settings'
  mapping:
    show_step_title:
      type: boolean
      label: 'Mark to show step title'
    step_description:
      type: text
      label: 'Text which will be show on step description'
    back_button_show:
      type: boolean
      label: 'Mark to show Back button'
    back_button_text:
      type: label
      label: 'Text for back button'
    next_button_text:
      type: label
      label: 'Text for next button'
    required_fields:
      type: boolean
      label: 'Mark for required fields'
    step_help:
      type: text
      label: 'Text which will be show on step help'