MQTT new format - Comfort Alarm System

Configuration
1

Hi,
I am in the 3rd week of home assistant, and learning fast. I am at the point of configuring my my Comfort2 alarm system with paho-mqtt bridge, to get my HA connected to the alarm panel.
This was first done at the following link: GitHub - koochyrat/comfort2: Cytech Comfort 2 Alarm MQTT Bridge (Home Assistant/OpenHAB compatible)
koochyrat was kind enough to make a step by step process with config text that was to be copied configuration.yaml.
This project is 4 years old, and I can see that the mqtt sensors are not shown in entities, probably due to a change in the format for the YAML file for MQTT sensors.
I am struggling to correct these sensors to the new format in the YAML without returning an error.

NEW FORMAT:

mqtt:
  alarm_control_panel:
    - name: Comfort Alarm
      state_topic: "comfort2/alarm"
      command_topic: "comfort2/alarm/set"
      availability_topic: "comfort2/alarm/online"
      payload_available: "1"
      payload_not_available: "0"
      code: "1234" 
mqtt:
  binary_sensor:
    - name: Front Door
      state_topic: "comfort2/input1"
      availability_topic: "comfort2/alarm/online"
      payload_on: "1"
      payload_off: "0"
      payload_available: "1"
      payload_not_available: "0"    
    - name: Front Motion
      state_topic: "comfort2/input8"
      availability_topic: "comfort2/alarm/online"
      payload_on: "1"
      payload_off: "0"
      payload_available: "1"
      payload_not_available: "0"

OLD FORMAT:

alarm_control_panel:
  - platform: mqtt
    name: Comfort Alarm
    state_topic: "comfort2/alarm"
    command_topic: "comfort2/alarm/set"
    availability_topic: "comfort2/alarm/online"
    payload_available: "1"
    payload_not_available: "0"
    code: "1234"  #code can be different from Comfort's
binary_sensor:
  - platform: mqtt
    name: Front Door
    state_topic: "comfort2/input1"
    availability_topic: "comfort2/alarm/online"
    payload_on: "1"
    payload_off: "0"
    payload_available: "1"
    payload_not_available: "0"    
  - platform: mqtt
    name: Front Motion
    state_topic: "comfort2/input8"
    availability_topic: "comfort2/alarm/online"
    payload_on: "1"
    payload_off: "0"
    payload_available: "1"
    payload_not_available: "0"

I have tried to correct 1 sensor to new format, but probably not correct until all have been re-formatted.
I have zero experience in YAML and MQTT, and any help would be greatly appreciated.

Thanks,
Iain

2

UPDATE:
I can now get a valid configuration in the YAML; however, I am still not seeing the MQTT sensors in HA.
Where would I find these sensors?
Is paho-mqtt a client and I need a broker?