Understanding Requisition Approval Workflow Setup
Using the Approval Authority Constants program (P43E094) in conjunction with the Approval Authority program (P43E09A), you can set up approval authority at varying levels of detail to meet the needs of your organization. For example, you can attach each employee to an approver or distribution list, or you can attach entire employee groups to approvers or distribution lists.
You first set up the Approval Authority constants; which determine the level at which the system should check for a specified approver or distribution list. After you set up the constants, you set up approval authority, which specifies the approver or distribution lists for each of the levels that you set up in the constants.
This diagram illustrates the workflow approval setup:

After you set up workflow approval, the system sends messages to required approvers using either the Work Center, an email address, or both. You specify in the Address Book system to which location the system sends a message.