Parallel automations and switchs how?

Configuration
1

i have for example such switch and script
all other switchs and actions will wait until this script is completed
how to do parallel working this switch and all other automations ?

switch:

  - platform: template
    switches:
      on_off_comp:
        value_template: "{{ is_state('input_boolean.on_off_comp', 'on') }}"
        turn_on:
          - service: switch.turn_on
            entity_id: switch.on_off_samsungtv
        turn_off:
          - service: script.turn_on
            entity_id: script.turn_off_computer

script:
  turn_off_computer:
    sequence:
      - service: switch.turn_off
        entity_id: switch.on_off_only_comp
      - service: switch.turn_off
        entity_id: switch.on_off_ambilight
      - delay: '00:00:05'
      - service: switch.turn_off
        entity_id: switch.on_off_samsungtv
      - delay: '00:00:15'
      - service: switch.turn_off
        entity_id: switch.plug_158d000354f85b