Receiving Submitted and FYI mail for Project Resource Assignment.

Hello,

When we assign any employee as Team Member under the 'Parties' Tab in 'Manage Project Financial Settings', We are receiving two consecutive emails

1. Submitted: Project Role Assignment Team Member is Requested for Team Member XYZ (Employee Name) for Project ABC(23100049) (Project Name and Number)
2. FYI: Project Role Assignment Team Member is Requested for Team MemberXYZ (Employee Name) for Project ABC(23100049) (Project Name and Number)

Which Approval Task does control these email notifications? Or how to disable these two email notifications ?

Thank You.