hi just let me know about this questions.. i am still learner

hai sap gurus,

i am learner let m know about below things

1. i want to see item over view sceen in sales order deafult...

2. if sales order is created if there is any open quatations for that item pop up should come

3. in quatation order reason is mandatary how to make it

4. allow mutiple partners to relaease the quantitiy contract

5. i want to block the sales document because its value is too high

with regards

sashidhar