1. Access the access group that will receive the configuration, PAM → Settings → Access → Access group and select the group that will receive the configuration and edit it.
2. Active the flag Require approval to start session.
3. On the tab Approvers select the approver group, the requests will be sent to his email.
4. Save it.
5. When the user tries start a session the approver will receive a email like that. To approve the access just click in Approve or reply the email with APPROVE.