Breakout rooms should be enabled by default on your UCSB Zoom account.
Verify this under your Zoom account settings: https://ucsb.zoom.us/profile.
Click on the settings tab on the left hand side and scroll down until you see the Breakout Room setting.
Enable Breakout Room if it is not already enabled. At this time, a best practice is to check Allow host to assign participants to breakout rooms as it may be a feature you wish to use in the future