Mosquitto, CloudMQTT Console, CloudMQTT Bridge & Manage Users

Where is use to those user names ?

I create one user name and password during homeassistant installation with script sudo hassbian-config install mosquitto port :1883 and other one i have in CloudMQTT console and some other i create in CloudMQTT manage users.

I am trying to flash Sonoff (Sonoff-Tasmota-4.0.7) with Arduino 1.8.2 , but i am confused which one can i use in user_config.h file. for use with HomeAssistant.

#ifdef USE_MQTT_TLS
#define MQTT_HOST “m20.cloudmqtt.com” // [MqttHost]
#define MQTT_FINGERPRINT “A5 02 FF 13 99 9F 8B 39 8E F1 83 4F 11 23 65 0B 32 36 FC 07” // [MqttFingerprint]
#define MQTT_PORT 20123 // [MqttPort] MQTT TLS port
#define MQTT_USER “cloudmqttuser” // [MqttUser] Mandatory user
#define MQTT_PASS “cloudmqttpassword” // [MqttPassword] Mandatory password
#else
#define MQTT_HOST “RPi IP adress ?” // [MqttHost]
#define MQTT_PORT RPI IP adress ? // [MqttPort] MQTT port (10123 on CloudMQTT)
#define MQTT_USER “Managed user in CloudMQTT Console ?” // [MqttUser] Optional user
#define MQTT_PASS " Pass" // [MqttPassword] Optional password