Prior to uploading a Cameo, you will be given the option to mark each Cameo as private or public. You’ll see this option in the bottom left corner of your screen. Click on the “Public” icon and then select “Mark as private."
After uploading, you can still make it 'private'! To make your Cameo private, open the Cameo app and click on the Orders tab, followed by 'Completed' in the upper left corner. After that, scroll down until you find the video you'd like to make private. Click on the play button on the video followed by the three horizontal dots in the top right corner and you will see the option to make your Cameo private.
As a heads up, this does take awhile for the changes to reflect on the website so you may not see the change right away.