Peoplesoft AWE - Approval process id setup issue

I created the new approval process id with one path and one step and with two levels of approvers. This is working as expected.

But client requested that in the two levels of approvers, first one as approver and second one needs to be everytime reviewer and needs to be generated automatically.

Is there a way to create a userlist and make that as reviewers instead of approvers?.

Please advise me.