Purchase Requisitions Are Not Getting Self Approved In Approval Management Engine (AME)

Purchase Requisitions Are Not Getting Self Approved In Approval Management Engine (AME), even though the requestor has Sufficient Approvel limit

We have 3 levels of Approval process

Approver - A upto 1000

Approver B >1000 & < 5000

Approver C >5000

Here , Approver A at times Submits requisition , but it is showing as "Pending" status with "A", and requisition is not getting Approved Automatically

, Approver "A" need to go to Notifications and Approve the notification Again, which is additionol work to the Approver "A"

Please suggest if it is intended functionolity.

Thanks & Regards,

Murthy