The dual-monitor display feature allows the video layout and screen share content to be placed on two separate monitors/screens. Gallery or speaker view can be displayed on one monitor while the other monitor displays a content share. This is useful for PPT presentations and hiding notes from the participants.
In the Zoom desktop app, in the General Settings, enable Use dual monitors.
Note - When sharing your content, open up the Chat, Q&A, and Participant Windows from the toolbar at the top of your screen.
Drag these items to your Primary Screen. Also include the Camera View.
This will allow you to monitor your Chat, Participants, Q&A, and Camera View all the while presenting your PowerPoint from your secondary screen.