For Lot Number you can enter 1...100 to retrieve lot numbers 1 to 100, you are limited to 200 at a time.
I make you lookup the parcel number and/or parcel BEFORE you set an Auto or MAX bid for a particular parcel, so you can avoid mistakes.
When searching, less is more. In most cases you only need to enter one fields' data and you will get a list of results to choose from. Clicking the Max Bid does not automatically make a bid, it just shows you the data, and then you can max bid it if you want.