It's like FD in normal banks when people put coins in staking for particular time period it will give return some percent of coin.

I am new to Ethereum just trying to understand this transaction fees. There is GitHub repo. which i can not properly understand but in demo it is using its own account to pay for transaction fee. for your reference : github.com/opengsn/gsn

Suppose there is five client which has account i given to them. mean each person got one account mean total five account and each account has zero ether. someone transfer some ERC token to one of the account now if i want that token to transfer my account each account need fee so i need to transfer ether to each account. But instead i want to make contract like that each time they transfer tokens to my account it will deduct fee from my account. Sorry for my poor English!! and Thank you!!

I mean if there is erc721 token transfer to some user which have zero balance and that user wants to transfer that token to the contract owner so user have to pay the fee. But instead I want to make a contract like every time user transfer that token to the owner Owner will pay the fees.