They may have a policy to keep a core staff and supplement with temporary employees. Being a temporary involves going to a variety of locations where physical accommodations and duties vary.
Duties can vary, as can the physical demands of the assignments.
Be sure to let your coordinator know if you have need for any special accomodations, or whether you can fulfill all the position's requirements. Your coordinator will give you all the details about an assignment including its length, rate of pay and all duties and skills required for the position. At that time, you should ask whatever questions you have and bring up any concerns or conflicts which may interfere with the assignment. If you are unable to perform any of the tasks of the assignment with or without accommodation, please inform your coordinator. After you accept the assignment your coordinator will give you the exact location and the name of the person to report to.