Every TA here needs to hold office hours, a time apart from the discussion section when students can meet with you to receive more individual attention. This is a great time to get to know students and make some personal connections, while providing an opportunity for those who are less likely to speak up during a section or lecture.
You should hold one office hour for each 12.5% TAship you hold. So, for example, someone teaching four sections of 20B needs to hold at least four office hours per week and someone teaching one section of Math 109 would have two office hours a week.