Hello,
Google is adding two features for Jamboard that will help make collaborating easier and give you more control when you share your work by creating and editing jams from the web.
Create and edit jams in a web browser
Now, you can create and edit your jams on the web. Everybody on your team can join in and collaborate on a session in their web browser. This means that anybody in the meeting can participate, whether they want to edit a sketch from a laptop or add sticky notes during a meeting.
Share and protect work with View Only mode
If you want to share something with others that they can view but not edit, View Only mode is now available for just that. With View Only mode, you can share something and set exactly who has edit access. This is similar to Docs, Sheets and Slides. This will provide a consistent experience no matter what you’re creating and sharing.