Perform the following procedure to add a content namespace to contain a group of related media files:
Procedure
Navigate to EM > Tools > Media Management.
On the Media Management page, click Add...
On the Add Content Namespace page, type a unique name for the new namespace in the Name field.
The name cannot begin with the at (@) symbol, must be less than 128 characters, must not be case-sensitive, must not contain spaces, or any of the following symbols:
