1: Click on the tab labeled ASSETS in the lefthand menu.

2: Click the button labeled PUBLISH. Find the destination you wish to edit and click the gear symbol, or create a new destination.

3: Navigate to the CUSTOM META-DATA tab.
Click on the ADD FIELD button.

4: Input your desired values in the boxes.
A YouTube video, for example, can have a KEY of “visibility”, and a VALUE of “public”. This will affect the upload options.
Click SAVE CHANGES to apply the metadata.
