SSS LEAVE MODULE - APPROVAL STRUCTURE

Good day, 

I need assistance with the approval structure on SSS leave module, currently the structure is setup as follows: 

Approval Group 

Department manager

Department employees 

So when a employee applies for leave, the department Manager must approve first, then the final approval must be done via the Group Approver

But when the manager approves, the leave is approved, and then the final approval don't occur, not sure if my approval structure is setup correctly. Please advise.