All office hours will be held in the Virtual Classroom on LEARN.
To get to the Virtual Classroom, go to the CS 246 page on LEARN, click on "Connect" on the top menu, then choose "Virtual Classroom". The office hour will show up as a meeting.
Check the course outline for the office hours of the instructors, ISAs and IA.
Outside of office hours, you can post a question on CS246 Piazza.