Before sending a proof to a Copy Editor, please ensure that you are familiar with Sending a Proof - The Basics

Step 1.
Send the Proof using the standard send proof workflow

Step 2.
When you see the below screen, add the collaborators to the proof.

Step 3.
Click the T icon next to the collaborator’s name that will require the copy editor role.

Tip! Don’t worry! If you need to add another copy editor at a later stage of the review cycle, you can add them on the Reviewers tab, on the Proof editor screen.

Continue with the GoProof wizard as normal, following any on-screen prompts.