It's in the Computer Science computer lab, during business hours the doors to the lab should be unlocked. Card access may or may not work outside those hours because this is a remotely delivered class.
It was set up just for cases when you need specifically need face to face help. Consequently there are only two Teaching Assistants who staff the in person CT so there won't be as many shifts as the remote Zoom CT. Funding for the in person CT came from this semester's enrollment expansion. Rather than adding another lecture - and paying another faculty member - enrollment was boosted by almost 50% into L01, L02 and some funding was provided to hire Rachel and Sean. (L03 was added even later in order to specifically accommodate international students who would not be able to travel into Canada by the start of the term). Although Rachel and Sean don't teach any tutorial sections similar to the remote CT you can go to the CT session of any Teaching Assistant for help. And just like remote CT no new teaching will occur, the in person CT is optional so you only have to go if you need face to face help.