Oganisation and staffing

Hi All ,

Iam working on interaction center web client i want to know deatils about the Organisation and staffing-difference between organisation model and organisation and staffing-

In organisation and staffing after creation of position when we click on right click on position these all functionalites will appear please any one can explain the each functionalite

of these items mentioned below-

1.Holder Central person

2.is described by job

3.is described by responsibility

4.is described by role

5.is described by standard task

6.is described by task

7.is described by task group

8.is described by user group

9.incorporates work center

10.is described by workflow task

11.is described by workflow template

Thanks&Regards

V.Rajasekhar.