Setting Up the Organizational Plan 
The notification of absence is created by an applicant and then approved or rejected by their superior.
To set up a suitable organizational plan for this scenario, carry out the following steps in SAP Business Workflow Customizing:
Execute the activity Edit organizational plan in SAP Business Workflow Customizing.
Create an organizational unit or change an existing organizational unit.
Create two positions in this organizational unit:
Designate the position you have set up for the superior as a chief position.