Why can't my users see certain Asset Factories?

If certain users are unable to create new assets using the New menu, chances are that the Asset Factories to which they need access are not configured properly. To correct this follow the steps below:

1. In Administration -> Asset Factories, click Edit on the container (if a container for the site exists) which holds the Asset Factories in question
   
2. In the Applicable Groups field, move the group to which the users belong to the right-hand box
   
3. Repeat the steps above for each individual asset factory to which the group needs access