Before you can delete collections, you must have access to your Mox workspace and be the Collection Owner or be assigned the Librarian role for the collection.
Step 1: On the Assets page of your workspace, open the Assets panel on the left-hand side if it is collapsed.
Step 2: Click on the collection to select …
Step 3: Choose Delete.
Step 4: In the Delete Collection window, if you are ready to delete the collection, click OK.
Step 5: The collection is deleted from the Assets panel. The assets belonging to it will not be removed. The assets shared by the collection will no longer be present in All Assets for those groups/users. For those that uploaded the assets, they will still see them in My Assets and All Assets.