API Payment Portal

Im looking for help with setting up API payments on my Six site. Here is an explanation of what needs to happen.
I am Owner A in which I will be selling a custom event website to Customer’s B (we have a goal of having 10 customer B’s per month). Customer B custom event website can have up to 100 Participants C at times to register for their event. Owner A will need to manage all of the Participants C with backend functions of organization with spreadsheets providing registered Participants C’s and more. Even though Owner A has access to all of the information, I will need for all Participants C registration fees to go to the specific Customer B bank account. Remember I could have up to 10 different Customer B accounts set up per month which could mean up to 1,000 payments from Participants C’s being routed to different Customer B bank accounts through this setup.
Is this possible?

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