You can filter the tasks or problems that are displayed in the Tasks or Problems views. For example, you might wish to see only problems that have been logged by the Workbench, or tasks that you have logged as reminders to yourself. You can filter items according to which resource or group of resources they are associated with, by text string within the Description field, by problem severity, by task priority, or by task status.
Adding line items in the Tasks view
Associating a task with a resource