First, the userform addressed by Graham is probably the most robust method.


You can use Mapped Content Controls.
Repeating Data Using Document Properties Content Controls and Other Mapped Content Controls



However, unless you are willing to do your own XML coding, using a mapped drop down list requires use of an Add-In. There are two free ones that I know of:

• Insert Content Control Add-In
• Content Control Tools

I regularly use both of these. The Add-Ins would be for design of the letter form, not required to use it.


For design of letterhead, see the following:

• Setting Up Letter Templates - Ribbon by Suzanne Barnhill, MVP
• How can I get a different header/footer on the second page?
• Letterhead Textboxes and Styles Tutorial

If you are introducing a Section break into your template, you are probably doing it wrong!