If you are looking for a collaborative whiteboard space where all participants can interact and annotate, you should turn to Jamboard. Jamboard is a Google application, part of the GSuite, that allows for collaborative “whiteboards.” Jamboard works like a Google Doc, in which you can have several users simultaneously editing a file in real-time. You can launch an audio-only Zoom meeting with your you and the participants will be able to talk amongst each other while editing the Jamboard session in real-time.