Reg Manual Condition types display in Sale Order

HI All,

I have a requirement here, and is as follows,

Here we are having so many manual condition types, so in a particular Order type in the Item condition, when user is pressing F4 all the manual condition types are displayed for selection. My requirement is to display a particular manual condition type for that sale order (not all the manual condition type) in F4.

Is there any way.Plz Help

Thanks and Regards,

Sam