You can map the content controls and cross reference them so they work as one when checked and unchecked. The content control version of http://www.gmayor.com/BookmarkandVariableEditor.htm makes this a simple task. If you want to explore what is possible with mapped content controls to a greater depth then Greg Maxey has a more sophisticated (but inevitably more complicated to get your head around) version which is linked from that page.

As for the content control/form field issue raised by Paul http://www.gmayor.com/ExtractDataFromForms.htm includes a tool to convert form fields to content controls.

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Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com