# Final Cut Pro

For Final Cut Pro, collaboration relies on Library Locking. [In PostLab, an FCP Library is added as a Document inside a Production.](/postlab-classic/productions.md#documents) Once a Library's opened from a Production, PostLab locks that Library for your exclusive use. If another Team Member accesses that Library, PostLab identifies who locked the Library, from which computer, and when.

![Final Cut Pro - Library Locking](/files/-MSFM7_8tECGlIoqlmdy)

To unlock the Library for another Team Member, upload your work in PostLab. PostLab automatically closes your Library in FCP and removes the lock from your Library.


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