Only need line manager 2 approval and not need first level manager approval

Summary:

We have a client requirement like, On submitting timecard if Hourly employee is having two-line managers, approval should go to Line Manager 2 and should skip the line manager 1 for approval. How to setup this requirement? can someone please help. We tried to give route using option as Line Manager2. but still approval is going to Line manager 1 and Line manager 2 is next in approval hierarchy. In our case we need to skip Line manager 1 for approval.

For employees having only one line manager, approval should go to that Line manager.Its working as expected.

Any help is much appreciated. Thank you