Canvas is the exclusive LMS (Learning Management System) for the UH main campus.
When it comes to closed captions, Zoom offers a choice between using Auto-Transcriptions (Closed Captions) or assigning a Zoom meeting participant or a 3rd party to manually type them. The following tutorials provide additional information:
Written Document: ZOOM Close Caption and Live Transcriptions Options | Video: Zoom Closed Captioning – Built in and Free | Zoom Tutorial