1) Select Orders to Edit
In an existing Campaign you can select individual Orders using the checkboxes on the left side. Then click the "Bulk Edit" button on the top right of the table.
2) Modify Order Details
From the Bulk Edit screen you can modify some of the same Order Details you set when creating the Orders. For example, you can change Title, Impressions Goal, Position, etc.
3) Add or Update Ad Copy
The Bulk Edit option also gives you the ability to upload Ad Copy for Orders. You can upload a PDF or Word doc for each individual Order or you can use the Master Input bar at the top of the page to upload the same file for all Orders you are editing.