To Lock a Specific Version of a Reference Document to the Master Document

Select a master document.
Select Document > Set > Manage Reference Versions.
The Reference Version Manager dialog opens.
Select a reference document in the list having versions.
Click Select Version.
The Select Document Version dialog opens, displaying a list of the reference document’s versions.
Select a different version from the list and click OK.
The selected reference version is now listed the Reference Version Manager dialog.
(Optional) Repeat steps 3 to 5 to change the version used for other reference documents attached to this master document.
In the Reference Version Manager dialog, click OK.
The master document is updated to use the selected version of the selected reference document.

Tip: Use the Reset button in the Manage Reference Version dialog to undo a pending version change made to selected reference documents. Use the Cancel button to undo all pending version changes, and close the dialog.