Enforce Check Out in Sharepoint
With Sharepoint 2007 it is possible to enforce a user to check out a document before he is allowed to edit the document. You can do this at the bottom of the versioning settings page.
When you want to edit a document and you didn’t check it out you get the following warning:
If you choose OK, edit the document and save it you’ll be asked to check in the document, to leave it checked out or to discard your changes and undo the check out:
