Short tutorial that should help out with capitulation events.
First, make sure you have it so that it can begin at the start of your Scenario, and the 5000 date. (Longest possible date)
Now, make sure your triggers look like this: <Country> Exists (The receiver of the event.) Provinces occupied (The province you'll want to occupy)
if you do everything right, it should look like this:
Now, after this, make sure the official capitulation event (if you're doing the multiple city occupation route) has all of the <City> Is ours decisi