Firstly, enter the amount you'd like to move up the bids by (E.g; If the current is 5, the next can be increased by 10, making 15). Then, enter the first amount bid (E.g; Starting bid is 20). To enter a new bid, press the Up Arrow or click 'NEW BID'. Once the gavial is down, the item is sold to the highest bidder and the values reset for the new item.
I've always been fascinated with auctions, so I thought about creating a virtual display for auctions you might hold. I have made sure it is very simple to use and understand, but if you have any questions, please do let me know. Best of luck to all bidders out there!