Doubts on Partner dtmn, availbility date. etc

HI SAP Experts,

1.) Which views in the Material master are valid for all the organisational Units?

2.) In billing header. Partner determination procedure is assigned to billing doc type

(where i can see this in SAP System)

3) In Shipments, Partner determination Procedure is assigned to Shipment type?

(where i can see this in SAP System)

4.) What is Preceeding and Succeeding documents.

5.) SAP determines the date at which u should be creating ur dlvry doc. Which of the following does it consider?