Absence Approvals: Send 'Complete' notification to employee when Line Manager submits

Hello,

We are leveraging Absence Multi Assignment Approvals, and allow for Line Manager's to submit absences on their employee's behalf.

When a Line Manager submits an absence, the Employee does not receive a notification when the absence is approved, because they are not the Creator of the task.

Is there any way to route a Completed notification to the Employee?

We tried setting up a Completed notification to 'Additional Assignees', but could not find an attribute to leverage referencing the Employee.