By default, the increment schedule is 10%. If the current bid is $10.00, the next required bid will be $11.00.

You can set your own custom increment schedule however. To do so, click on the Auction Title to go into the auction dashboard, and then click on the 'Increment Schedule' as seen in the screenshow below:

To add a new schedule, click on the green colored 'Add' button and then you'll see this page:

Click on the grey colored "+Add More" button to add new rows and simply fill in the up-to amount and the increment. Click on the Add button to save/close.
​
You'll then see your increment schedule like below. You can use the actions menu on the right to edit or delete increments.

Tip: If you do not want to set a custom increment schedule for each new auction, there is a CLONE feature as seen below. The admin can 'clone' or copy an existing auction - and this will also copy over the increment schedule to the newly created auction.
​
Some clients may want to create hidden 'template' auctions where they fill in the Auction details, terms, location, and the increments, and then every time you want to list/create a new auction, just 'CLONE' this template auction. You'll then edit the cloned/copied auction title/details - but keep the increments.