Good day. Thank you for your question.
You will need to get the raw sensor data using the Configurator and parse it according to the Data Protocol of the sensor. Once the preset has been generated from the previous steps, it is then added to the Configurator. Depending on which IO you have set it, it will appear in that respective AVL ID. For example, if you have set it as BLE Custom 1 then the AVL ID is 713, BLE Custom 2 is 714, and so on.
A detailed instructions on how to add a custom BLE sensor here - https://internalwiki.teltonika-gps.com/view/Adding_Custom_BLE_Sensor
Please let me know if you have any questions.