output in what form - how does the API give them addresses? no, it's not for LC
it seems like they did automation in the directory, which was filled in based on the addresses of the NP - maybe you can come up with something to display this directory in an additional field when placing an order, and then copy it to the address and continue working with it
if you want to be provided with a ready-made solution for your PSU without modifications, then you probably need to contact the integrators
https://crm-onebox.com/en/partner/search/?tags[]=%D0%A1%D0%B8%D1 %81%D1%82%D0%B5%D0%BC%D0%BD%D1%8B%D0%B9%20%D0%B8%D0%BD%D1%82%D0%B5%D0%B3%D1 %80%D0%B0%D1%82%D0%BE%D1%80%20OneBox