You can adjust your bid by Target for your RevContent Campaigns within the Brax interface.
Navigate to the Campaign Manager screen for the campaign you wish to adjust target bids for and click on the Targets tab.
In-line edit the bid by clicking on the blue text in the Bid column. Enter the new bid amount and click on the check box to confirm the change.
You can also Add Additional Targets from here by clicking Add Target, as well as Block/Unblock them by clicking on the pause or play button next to them.