From the homepage you can administrate the library by clicking 

1. Library Administration 

Click  to 

1. Update the home page of the library

Click "General Settings" to update the logo & the home page of the library

2. Update document classes

You can add and maintain document classes by clicking "Document classes"

(Document classes are required when a new document is uploaded: 

3. Update categories

4. Manage views & filters

2. Library Security