Linking 2 dates - change one it changes the other

[deodi]

I have a document that I have various dates that needs to be selected by the user (will be protected so no editing on their behalf). I want to be able to choose 1 date, it should then pull through to other places. I got the "publish date" in quick parts, so I get that to work. However, I have another set of dates that should be a year later (expiry date) and this should be automatically populated by choosing the first date (publish date). As Quick Parts only have 1 date one I can't seem to create another date nor get the "fields" to work as read in other posts.



Please could you advise me on how to get the date to automatically populate by selecting the "publish date".