If your organization wants to change the number of Request Approvers in a workflow definition, who receives e-mail, or the content of the e-mails sent to workflow participants, you can change the default workflow policy for your organization as needed.
Each deployment has a default workflow policy that is assigned to all new security domains. You can change the default policy. The default policy applies to all security domains that are configured to use the default policy.
In the Security Console, click Setup > Self-Service Settings.
Under Provisioning, click Workflow Policies.
Use the search fields to find the policy you want to set as the default.
From the search results, click the policy you want to set as the default and click Edit from the context menu.
Under Workflow Policy Basics, select the Default Policy check box to designate the new policy as the default policy for the deployment.