Creo Options Modeler > References > Data Management > Workspace > Object Operations in the Workspace > Checking Out Objects > To Check Out an Object
  
To Check Out an Object
1. Click File > Check Out in an active session of the Creo application.
2. Specify the name of the object that you want to check out and click .
Alternatively, you can select and right-click the object name on the Model Tree and click Check Out on the shortcut menu. The object is checked out.