To participate in Auction the seats should be reserved. There will be a fixed number of seats that should be reserved to participate in the auction. Only if all the seats are reserved else auction start date is met, the auction gets started. The condition varies accordingly. To reserve a seat it should be paid.
The users who reserved the seats can place a bid, while others cannot. To place a bid the user should have enough balance in their account. Every time when the user places the bid it checks whether there is sufficient balance in their account. If not it won’t allow you to place the bid instead it will redirect to the Deposit amount page. Seated auction is a little similar to penny auction.