Roles and Responsibilities of End User :

Using the software at the end or after the implementation is an End User.
In sap HR , we do come across entire Org Management creation by an end user after the Personnel strucutre is created. Orgnisation Management(OM) objects like creation of Org Unit means functional area or dpt , creation Job and Position and its occupancy is with in the limits of an enduser.

Initiallly the OM is created by sap consultant . In course of time a new department has appeared in the company of the client .. this has to be created by the enduser rather than depending up on the implementor... similarly new job and position..like this small things are always done by the enduser.

The entire work of OM is purely depends upon the enduser.
After from this running periodical payroll and Ensuring of the Time schedules ( Work Schedules) of each employee is done from sap easy access by an enduser and the show run of payroll everymonth is by the enduser only. Like this lot of roles are there for an end user.

Whatever the problems come across during the enduser utilisation of sap ...that will reach as ticket to the support team.