Conservation Views are a great way to view lists of your data in various ways. They are also a great way to perform batch updates on your data.
From any View, select one or more of the items in the list by either individually clicking the check box next to the item or selecting one of the options from the Select menu in the Select column.
With one or more items selected, you can now go to the Actions button in the upper right corner and choose Update Selected from the menu.
The Update dialog will open. You perform batch updates by selecting the field you want to change and the value to which the field should be changed.
Depending on the field you choose, you will either be able to type in a new value or you must choose from existing values.