Clean up your iPad by specifying the length of time you want to keep unused models. 
- From the iPad's main menu, Settings 
 Apps 
 BIM 360 Glue 
 Remove Unused Models.  
- Tap a duration.  
Note: This is the length of time all unopened or unused models are kept before automatic deletion. If you do not want to delete unused models, select Never to retain all unused models indefinitely. You will receive a warning message 3 days before deletion of unused models.