fill other columns value through value set

Dear All,

I have two questions here , I will be very thankful of your kinds help or comments.

1) I want to design such type of value set which can call on one parameter(concurrent programme) and it through values to other parameter also.

e.g i have three paramenter a,b,c and value set attach with parameter a , on click a value set should have value for a,b and c parameter and fill those parameters.

2) want to show warehouse(ship_from) field under main tab in quick sales order screen. when go to view and shown field i could not see ship_from field here.