Decide for yourself when to publish your feedback. "Publish" means that the students can take part of your feedback. The default mode gives each student access to your feedback during at once. This video gives instructions on how to change this:

The video goes through:

Postpone publication for all or just a single assignment in a course
How to publish your feed-back
Postpone publication even if you already started to give feedback

Why postpone feedback?

Give all students access feedback and/or gradings at the same time
Feedback involves more than one teacher
Possibility to alter your feedback/grading during the feed-back process

Any questions? Don't hesitate to contact canvas@education.lu.se