Issue :-
It's needed to create two level approval
Solved by SharePoint designer
* Create two variables that hold users for first and second manager.
Find Manager of current item then set variable manager 1
Find Manager of manager 1 then set variable manager 2
* Log to Workflow history
* At first manager Approval
we will set variable IsItemApproved = true if approved and
set variable IsItemApproved = false if rejected
Reference:
http://sharepointegyptianstyle.blogspot.in/2012/10/two-level-approval-workflow-in.html