This document provides instructions for library staff on how to use the Sierra Circulation System to perform fundamental job duties like checking out, checking in, and renewing items. Key steps include choosing the appropriate function from the menu, swiping the patron's card, scanning item barcodes, desensitizing/sensitizing items, and closing out patron records. The system allows staff to view a patron's checked out items, renewals, fines and holds. Questions can be directed to other staff.