Click on Campaigns & Bid By Domain in the left menu.
Status, CPCs and Budgets can be updated on this screen.
To update other campaign information, click on the down arrow to the left of the campaign name and choose Settings.
Be sure to scroll to the bottom of the page and click the Save button before exiting.
You can also reach the Bid by Domain page or access the ads in the campaign from the down arrow.
For additional information please view this informative video below.