You can update the settings for your meeting after you add the Zoom tool to your course and launch the meeting room for the first time. View How do I add the Zoom tool to my course, for instructions on enabling Zoom for a Sakai course.
From the course menu bar, select the Zoom tool.
Select Edit this Meeting
Scroll to the bottom of the page and select Edit this Meeting.
Edit and Select Save.
Edit the meeting with the new desired settings and then scroll to the bottom of the page and select Save.
Select Course Meetings.
Select the Course Meetings breadcrumb to return to the main Zoom page.