How to make money transfers between site users?

Question

PayPal

Good afternoon,
How can I implement money transfers between site users on the site? It is necessary that the user only poke buttons on the site and enter the information of a credit card or paypal account, and the site owner withholds a certain commission for transfers between clients. Since it's made on ebay, aliexpress, etsy, etc.
How is it done? First, the money is transferred to the owner of the site, and only then to the person to whom this payment is assigned?

Answer 1

just
look at the Ebay statement - the payment in favor of Ebay is

Answer 2

payme.biz