Usage
Clicking the Usage tab displays the Usage home page where you can view a list of usage records matching specific criteria, and perform actions such as creating usage records. 
More about the home page.
More about the home page.
to open the List View drop-down menu, then select the list view you want. 
to manage your list views. 
appears, then click the field. Press Enter to apply your edit, then click What is Usage?
The Usage object contains customer usage information for products or services that are charged at variable rates. You can create usage records and associate them with contract line items. You can then bill customers for their consumption of a product or service based on the usage records.