maestro-3.0.1-rc2/maestro.links.action.yml

maestro.list_tab:
  title: 'List of Templates'
  route_name: entity.maestro_template.list
  appears_on:
    - entity.maestro_template.add
    - entity.maestro_template.edit_form

maestro.add_action:
  route_name: entity.maestro_template.add
  title: 'Add Template'
  appears_on:
    - entity.maestro_template.list