1. From Setup, enter Product Schedules in the Quick Find box, then select Product Schedules Settings.
2. Select the appropriate checkboxes to enable quantity and revenue schedules for your organization. Note that disabling a schedule type automatically deletes all existing schedule information from products.For a definition of each schedule type, see Products, Price Books, and Schedules Overview.
3. For each schedule type you enable, select whether to automatically enable that schedule type for every product in your price books. This option automatically selects the Quantity Scheduling Enabled or Revenue Scheduling Enabled checkboxes on every product in your price books.
4. Click Save.