In order to update this setting, you will first want to navigate to the Scheduler stage in the Workflow Editor that you'd like to make changes to, and scroll down to the 'Reminder Message' section.
For example, to change your reminder to go out 3 hours in advance, type '180' in the highlighted box below (3 hours x 60 minutes = 180 minutes). Moreover, to add another message, simply click the "Add Another Message" button. That's it!
If you have any further questions regarding this, please feel free to send us an email at email@example.com.