Few Doubts in Configuring OM

HI Experts,

First of all let me thank you all for helping and guiding me. I have started with HR and working on OM now.

While doing OM i got some doubts. First is I am maintaining the relations as below

Org. Unit --> Position --> User. Am i on the rite track.

Second : what does delimit mean?

Third : While defining position i have something called Staff flag?

what purpose does that flag serve?

Forth : Defining someone as head of department for a org. unit and then defining other positions in that org. unit as staff. will that define reporting automatically??

Fifth : What does a staffing status define??

Note : I am configuring the org. Structure in simple maintenance mode.

Thanks In advance

Regards,

Raj