QUOTA ARRANGEMENT IN MRP

Hi,

We have three vendors a,b and c with the quota arraangment 5,3 and 2 resp.In MRP lot size is fixed for 1000 qty, reorder point is 150 , Now stock availiblity is 50 in mrp PR is generated for 950 qty. How the system distributed the requirment to these vendors? What are the config steps to be taken in this scinorios. pl guide me in detail.

will reward points accordingly,

Regards