When you are done updating a checked-out document, save your changes by
checking it in.
To check-in a document
Open the Projects module.
Select an item.
Select the Documents tab.
Select a checked-out document, right-click and select Check In.
In the Check In dialog box, select the location of the document being checked-in and add comments. Select the Update the copy in the repository, but keep the file checked out check-box to replace the file with the copy you have on your local computer
and keep the document checked out.
Choose the incremental update that will be made to the document revision history
during check in. The format is major.minor.revision (as in 1.0.0 or 2.1.2). Set Increment Version to Major, Minor, or Revision to update the document's revision history.