You can archive a class to remove the class from your class list and conversations from your messages inbox. You can restore the archived class at any time to restore the conversations.
Archive Classes
Step 1: Select the class you'd like to archive under 'Classes' and click on the three dots in the top right corner.
Step 2: Select 'Archive Class'.
Step 3: Click on 'Archive'.
Retrieve Archived Classes
Step 1: Click on your name on the bottom left.
Step 2: Select 'Archived classes'
Step 3: Click 'restore' next to the archived class you would like to bring back.