How to make the functionality of selling goods for corporate clients correctly?

Question

1C-Bitrix

On the basis of the Small Business edition, it is planned to create an online food store where food will be sold to corporate clients, when several buyers are attached to one organization, all these buyers will have a common balance.
The bottom line is that each corporate client orders his own menu, but the money for the purchase is deducted from the overall balance of the organization. What is the best way to implement this in Bitrix?

I guess one of the options is to create user groups where the group corresponds to the organization, each corporate buyer belongs to its own group, for example, the group Firm 1 and it has 8 employees. Make one of the buyers the moderator of the group and make his balance the balance of the organization, the rest of the users will have to receive money from his balance when they buy goods. But here the question arises, how can buyers transfer funds from their balance to other buyers?

In general, it would be interesting to know what other options for implementing such functionality could be?