Follow these steps to activate Pre-Bidding on your auction.
Step 1) Go to: Live Event Options > Event Settings > Pre-bidding on view only items > Hit "Yes".
Step 2) Jump over to the All Items page and add a new item. Select "View Only" as the listing type. You will see an option appear for "Pre-Bidding". Select "Yes".
Step 3) Repeat steps 1 & 2 for every item you would like to generate a bid sheet for.