Here's a VIDEO that may help you - Leaves, Availability, Timesheet Approval Notification and Task Mail Format
Notifications for the specific requests will show as follows:
New leave request - "A new leave request has been submitted by Last name, First name. Please login into MPM and go to My Tasks to take action."
Availability Task - "New availability has been submitted by Last name, First name. Please login into MPM and go to My Tasks to take action."
Timesheet task - "A timesheet has been submitted for approval by Last name, First name. Please login into MPM and go to My Tasks to take action."
***Whenever a leave is approved, if an email needs to be cc'd to the site scheduler and/or other staff, you may add a text box in site properties for Leave CC Email, this will send leave approval emails to these mail ids, also the mail will go to the supervisor of the employee as a cc.***