Why can't my users see anything in the Add Content menu?

In order to see a particular item in this menu, a User must be part of a Group that is configured in the Applicable Groups field for both the Asset Factory and the Asset Factory's Container. 

Steps for configuring both can be found below:

1.  Add Applicable Groups to the Container (if applicable):
   • Go to Manage Site > Asset Factories.
   • Either right-click and select Edit on the Container or click on the Container and click the Edit button.
   • In the Applicable Groups field, click the Choose Groups button and add any Group(s) that should have the ability to see this Container in their Add Content menu.
   • Click Submit.
     
     
2. Add Applicable Groups to each individual Asset Factory(s):
   • Go to Manage Site > Asset Factories
   • Either right-click and select Edit on the Asset Factory or click on the Asset Factory and click the Edit button.
   • In the Applicable Groups field, click the Choose Groups button and add any Group(s) that should have the ability to see this Asset Factory in their Add Content menu.
   • Click Submit.