Before you can create an attribute, you must have access to your Mox workspace and have a role other than View and Download or View Only.
Step 1: On the Assets page of your workspace, open the Assets panel on the left-hand side if it is collapsed.
Step 2: Scroll to the bottom of the list of filters and click Add Filter.
Step 3: In the pop-up window, click Create Attribute.
Step 4: In the New Attribute window, type a name for the new attribute.
Step 5: From the Type drop-down, choose what type of attribute to be created.
For List type, check the box beside Allow multi-select if you want to be able to select more than one list value to be applied to your assets; and
For List type, check the box beside Allow hierarchical values if you want to be able to have a structure of attribute values.
Step 6: Click Add. The new attribute is added to the Asset Filters section.