If you have a large number of open tickets, you may want to be able to close them all at the same time.
To close multiple tickets, first run the query that will put them all on the same screen. For example, issue a search for incidents (or other ticket type), with Status=Open.
Once the tickets you want to close are in a list (click List All on the bottom where necessary to display a large list), click Edit in List.
At first, the Save(@) button is not enabled. Make the desired change, for instance by changing the Status field from Open to Closed.
The Save button is now enabled. Click it, and all items in the list are updated.