movie_mode.yaml

input_boolean:
  movie_mode:
    name: Movie Mode
    initial: off
    icon: mdi:movie

automation:
  - alias: Movie Mode
    trigger:
       platform: state
       entity_id: "input_boolean.movie_mode"
    action:
       service: scene.turn_on
       data_template:
          entity_id: >
            {% if is_state("input_boolean.movie_mode","off") %}
              scene.hello
            {% elif is_state("input_boolean.movie_mode","on") %}
              scene.movie
            {% endif %}

script:
  echo_button_movie:
    alias: 'Echo Button - Movie'
    sequence:
    - service: input_boolean.toggle
      data:
        entity_id: "input_boolean.movie_mode"

homeassistant:
  customize:
    script.echo_button_movie:
      icon: mdi:hockey-puck