Expense Approval

Hi, can you remind me how to have expense approval by different manager or department manager. Would like the direct manager to approve taxi or claims for their direct reports.

Hi Kap Chew
I read through the help link. The approval workflow is based on expense type. I have set Transport as an Expense Type. Under this Expense Type, I can only set up one approver workflow. How do I have 2 different approvers for the same Expense Type (Transport). Employee A has to have his own Line Manager A to approve and Employee B has to have his own Line Manager B to approve for their Transport. I can't find a way to have the same Expense Type tagged to their respective Department Manager.