The following preferences can be changed on the
  
  
  Install/Update > Available Software Sites
  page:
|   Button  | 
        Description  | 
    
|---|---|
| Add/Edit/Remove | Add, edit or remove a software site. | 
| Test Connection | Tests to see if it is possible to connect to the selected software site. | 
| Disable/Enable | Allows a software site to be disabled so that the update system will not try to find software on the site when updating or installing software. | 
| Import/Export | Import or export the list of software sites from a file. | 
Here is what the Available Software Sites preference page looks like:
Working with the Available Software sites
Scheduling automatic updates