Allow second-level managers to update ratings in performance documents

We want to allow second-level managers to make changes in performance documents where first-level managers have already rated their employees.

the process is as following:

1- employees evaluate themselves

2- managers evaluate employees and submit the documents for approval to Performance admin

3- once approved or rejected second-level manager receives FYI

4- if approved manager shares performance document with employee.

Can we allow second level manager to not only review the performance documents but also make changes to the ratings?