Email notifications sent to the substitute

Hello Experts,

We are implementing the leave request WF using WS12300111.

We are sending an email notification to the manager in his outlook when an employee has taken a leave.

Let us consider the manager has adopted a substitute in his absence. Now these notifications that go to the outlook of the manager should go to the substitute also when the manager has activated his substitution.

Could you kindly guide us as to how we can go about doing the same.

Cheers,

Belinda Clarke