How to Enable Workflow Email Notifications from Fluid Position Management?

Good afternoon,

Using HRMS 9.20.00.000 and Tools Release 8.57.20.

I've set the Approval Options on the Position Data Installation page which has enabled the Approver Information to appear once the request had been submitted; before it hadn't appeared. I've selected Email in Register Transactions for process IDs NewPositionApproval and PositionApproval. The approval requests appear in the approvers Pending Approvals but they don't receive any email notifications.

What do I need to do to enable approvers to receive email notifications from Fluid Position Management?

Thanks and have a great day!