LoRaWAN Class B

I would like to use LoRaWAN Class B, I’ve been reading on the internet that the gateway has to support this LoRaWAN class because it need a GPS for precise timing. LoRaWAN Class A and C are already working. But I cannot find anything on the Class B support. Does anyone know if this is possible with my gateway and how to configure it? I have the LtAP LR8 LTE kit, this gateway has a LoRa radio and GPS.

Unfortunately, our LR8 and LR9 cards support only CLASS A and CLASS C devices:
https://i.mt.lv/cdn/product_files/IoTproducts_210717.pdf
(specification section in the brochure).

CLASS B is not supported.