How to fill the reserve in 1s when integrating with bitrix24?

Question

1C-Bitrix

Help, I can’t set up the unloading of orders from the cloud version of bitrix24 in 1s unf so that the reserve field is filled when orders arrive?

In the site integration module, this field is filled in, but I can’t figure out how to do it with bitrix 24.

If this is not possible, please tell me if you purchase a crm box + online store and set up receiving orders through the exchange module Online store + 1c (7.0.1.19), how many orders are now not in the crm + online store box, work with them goes only through crm. If I create an order in crm on my own, it will be sent when exchanging through this module.