In Travel & Expense workflow when we set the second level approval, its only Apply for Travel Request not for Expense claims like Travel Expense, Conveyance Expense and Other Expense.

This is an urgent requirement for our customers, request you to please take on priority basis.

Can you please explain the logic behind having a second level approval, sees like a lot extra work for someone senior to do. What is it that the second approver will do or look into that the first one cannot?