Delayed adaptive payments

Please give me the full stream of Adaptive Delayed chained payments 1. create an account (sandbox / developer) 2. code for the sandbox endpoint 3. classes will be used in Adaptive Delayed cained payments 4. What happens after paykey returns? and if any other moment I need to take care.

Thanks for the help.

The scenario is that the customer pays the amount in the store on the website via paypal and goes to the store to check the item, and if it turns out to be good, he / she will receive his / her item, and if it turns out to be not very good, he / she will ask about return. Now the question is {

I am. We offer 7 days return time, we can manage this time in PayPal. This paypal gives a 60 days return time. Tell me if we have to increase this by 60 days like paypal?

II. Tell me if a customer is requesting a refund from PayPal through a site using an API?

III. If the customer can request a refund, then it is possible that all the money received by both

will the primary and secondary receiver be returned to the buyer / sender at the same time?

IV. Likewise, if a store (secondary receiver) offers a refund, it is possible that the amount of secondary receivers and the amount of stores will be returned to the buyer at the same time. (The current scenario in PayPal that I have seen is when the secondary recipient clicks on the refund question, the amount the secondary recipient receives will be returned to the primary, and then the primary will be able to return the full transaction to the sender)}