On the Projects page you can change model state to locked or unlocked. When a project file is locked, it cannot be edited or deleted.
To change project file state
On the Navigation Tree, click Server Library and select Projects.
Select a project file from the list and click the Lock icon at the end of the row:
- means that a project file is locked
- means that a project file is unlocked
To unlock all project files at once click the Release all locks icon ().