From the Monetization section of the left menu, select AVOD Video Ads and then select Manage Campaigns
On the right, you will see filter options
Release Order: When you click on the dropdown list, you'll see all the release orders you've created. Once you select a specific release order, only the campaigns under that release order will be shown.
Campaign Type: If you choose an option from preroll, midroll, or post-roll, you will be able to view only campaigns of that specific Campaign Type.
Status: Select a status - Start, Paused, Closed, or Not Approved, and the campaigns will be filtered based on your selection.
Hit the Get Campaigns Button button
You will only see campaigns based on your selection
How to Pause or Start Campaigns?
In the last column, labeled Pause Start, you'll see buttons for starting and pausing.
When you click the pause button an active campaign is paused
When you click the start button you can resume a paused campaign