Finding registered services

Configuration
1

Next YAML script suppose to create at least two services (delta_dispense_mills: and delta_toggle:):

input_text:
  delta_device_id:
    name: delta_device_id
    initial: !secret delta_device_id

rest_command: 
  delta_dispense_mills:
    method: POST
    url: >
      https://device.legacy.deltafaucet.com/api/device/dispense?deviceId={{states.input_text.delta_device_id.state}}&milliliters={{mililiters}}
    headers:
      Authorization: !secret delta_token
      User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36
      Referer: https://device.legacy.deltafaucet.com/
  delta_toggle:
    method: POST
    url: >
      https://device.legacy.deltafaucet.com/api/device/toggleWater?deviceId={{states.input_text.delta_device_id.state}}
    headers:
      Authorization: !secret delta_token
      User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36
      Referer: https://device.legacy.deltafaucet.com/

I looked thru everything in HA (I think) and searched Forum and Docs but could not find these services.
Are they actually created or there not?
If “yes” where do I find them?

2

Make sure you have reload your YAML or restarted HA for the new services to be created. Once you have done that you should be able to test them in the Developer Tools > Services tool. They should appear in the drop-down list as rest_command.delta_dispense_mills and rest_command.delta_toggle. They should also be available everywhere else actions are available such as automation and scripts, and button or card actions. In all cases you will need to select “Call Service” as the action type.

3

That was it! Thank you. I did not realize this is drop-down menu.
I tried to CALL SERVICE and it looks like it was called successfully. Unfortunately nothing happened.
But this is very different story (I guess).