There are collaborative study areas in Geisel Library on floors 1 & 2. It is fine to use Zoom in these spaces, although they can get quite noisy, so headphones are recommended. If you forgot your headphones, pass by the Service Hub and check out a pair with your active UC San Diego Campus ID.
You can also reserve group study rooms if you partner with a friend or fellow student. Study rooms are designated for two or more people.