It is up to the discretion of the instructor to determine how often TAs are required to hold office hours. Typically, we recommend twice a week for at least an hour, for a 3 credit hour course. You can also hold office hours by appointment only.
Make sure to indicate on your syllabus where and when you and your TA will be available for office hours.
There is some space in Wrigley Hall that can be reserved for office hours. Please contact SOSCourses@asu.edu for availability.