By default, an approval configuration is provided. For unassign approvals, one approver is required in the Approver – Level 1 approval group. By default, the unassign approval group (Unassign Approver CC - Level 1) is created and users that are part of this group can approve the request. By default, this group contains the unassign approver role, sn_vulc.unassign_approver. You can modify or create a group and update the approval configuration by navigating to All > Configuration Compliance > Administration > Approval Rules > Remediation Task Field Change Request > Unassign Remediation Task.