Calculation Type Field in VBO1 (Rebate Condition Record)

Hi Friends,

In my Condition Type BO04, I have given calculation type as "%" in V/06 (Condition Control data). I have created Condition records also using VBO1.

Now the problem is that user wants Calculation Type "Quantity" for some Customers and Calculation Type "%" for some Customers. But system is picking % by default in VBO1 because I have assigned calc type % in BO04 as I have mentioned above in V/06. And the field Calculation Type is in display mode in VBO1.

Is there any control which regulates the field will be in editable or non editable mode in VBO1 so that I can change the Calculation Type from % to Quantity in VBO1 Directly.

This is a Client Requirement. Can anyone help?

Regards,

Vikas Chhabra