1. Launch the Gemiini Session Viewer app
  2. Tap the Settings tab in the lower right 
  3. Toggle Allow Session Deletion ON
  4. Tap the On Device tab in the lower left 
  5. Tap the Delete button for the desired assignment
  6. The assignment will be removed from the device's memory and will be available for redownloading from the In Cloud tab.

Note: To delete a session from the In Cloud tab you will need to remove the session from your Student account's My Sessions by following the instructions found here.