In the document attached to the link, you'll see two dropdowns: a 'master'; and a 'slave'. If you press Alt-F11, that will open the VBA editor where you'll see the code that drives the process. When implementing this in your form, you can change the:
• content control titles - provided you update the VBA code references to match;
• the selection options for the 'master' control (both in the document and in the VBA code); and
• dependent outputs defined for the 'slave' control via the Select Case statement in the VBA code.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]