How to setup Sage X3 Budget workflow in V11

Dear Sagians,

I have few question regarding budget setup in sage X3 V11 

  1. Control budget over a period of time when the budget exceeds in that period

            Eg: January Budgeted amount 1000

                  PO 1    -     500

                  PO 2  -     600

            When the second PO creating the system should block and show a error message budget amount exceeds.

           

         2. If budget amount exceeds  workflow approval

            How to configure the PO workflow if the budgeted amount exceeds and set the signatory users based on different amount slabs

Regards,
Shereef N