About checking in elements
Checking in files or directories adds new versions to the VOB. You cannot check in a view private file or directory: you must first add the file or directory to source control and check it out. Checkins are handled differently in snapshot views and dynamic views.
Checkins can be performed using the cleartool command line interface or, on Windows systems, using DevOps ClearCase® Explorer or Windows Explorer.
If you work in an environment with the baseClearCase integration with Rational® ClearQuest®, you may have to perform additional steps.