Two Security Groups:There are two security groups present "Approval User" and "Approval Manager"

Configure Approval Settings:There will be a menu for configuring the approval settings.

Select Approvers for Corresponding Documents:This is the configuration panel of approval. From here we can set the approvers for the corresponding documents.

Track Approval Process Progress: There is a approval tab inside the documents from which we can see the progress of the approval process and the list of persons included.

Approve Option for Users Included in the List: There will a button "Approve" for the users who are included in the list.