If you are sending the Notification to a Role (everyone with the Payables Responsibility) the Expand Roles is very important
- Checked, this will create a separate Notification to each person in the Role. If an action is expected every person has an opportunity to act on the Notification
- Unchecked, this will create a single Notification which is emailled to each person in the Role. The first person to act on the notification completes (or closes) it.