custom properties

[Jim]

Is there a way when I add a custom property to a document and then insert
that field within a document that I can prevent a user from deleting the
field and just typing in a value instead of using the proper method of
changing the value within the field.

 

[Stefan Blom]

Place the insertion point inside the field which is actually a content
control. On the Developer tab, click Properties (in the Controls group).
Select the "Content control cannot be deleted" option, and click OK. (If you
can't see the Developer tab, first display it via Office button | Word
Options, Popular category.)

Note that if a person tries to delete any selection including the content
control he or she will be unsuccessfull; "This modification is not allowed
because the selection is locked" will display on the status bar.