Key Features and Insights on Using Canvas in Slack
I also realized a few things about Canvas.
If you are on free Slack plan, you essentially get one free Canvas.
Deleting a Canvas - Beware If you delete it, you can't add it back without getting PRO
Lock Canvas - There is a feature to lock the canvas, which I think is important because a member can make edits
Show by default - I think this means it will show first when people get to that channel for first time, which is nice to be able to share info before people post in new channel for first time
You can also right click the canvas and disable people getting notified in channel when you make updates. This is also a default setting in admin settings