When you attempt a Diplomacy check, you can choose not to roll your expertise die until later. After you determine what the check’s result would be, you can choose to either roll your expertise die and add it to the total or forgo the expertise die and reroll the check (see page 243). At 9th level, you can spend 1 Resolve Point to both reroll the check and add the result of your expertise die.

You keep yourself as up to date as possible about the events and major figures of any region you are in. Once you have been in a settlement or region for at least 24 hours, when you attempt a Diplomacy check to gather information, you can forgo your expertise die to attempt the check as a swift action (rather than the normal 1d4 hours).