Yes, if you want to restrict the response to one or more content controls, you need to specify which one(s) to act on or to exclude. That can be done via the content control's Title and/or Tag, or its relative position in a defined range (i.e. Document, Section, Table, etc.).

There are plenty of examples of that on this forum, though usually in the context of a ContentControlOnExit macro. A search for 'ContentControl' will turn up numerous examples.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]