Change Manager approval fyi notification to be sent to current and proposed manager

Summary:

Change Manager approval fyi notification to be sent to current and proposed manager

Content (please ensure you mask any confidential information):

Hi, we have 2 levels of approvers for Change Manager approval transaction.

First level is set as SINGLE and has three rules - One is auto approved and other two route to approval group/management hierarchy for approval

Second level is set as SERIAL and has two rules - One is auto approved and another is routed to approval group.

Our requirement is to add FYI notification to be sent to both Current and Proposed Manager of the worker. Can someone please suggest how we can achieve this.