How to be a legal intermediary between buyers and sellers on your market place?

Question

Payment systems

The client creates his own, as he says, "unique" market place, such as aliexpress in a certain niche))) He
asks: how can he implement payment on the site?
Well, for example, he will connect some kind of payment system - ala Robokassa - and then what?
He, as an individual entrepreneur, how will he accept money not for his goods, then transfer somehow to the seller?
How is it all done - what are the principles?

Answer 1

Greetings,
you are in the wrong forum, right here > TYK