Auto Update of conditions in Scheduling Agreement

Dear experts,

i have a requirement like this..

when we create a scheduling agreement ...we enter material,vendor,target qty and validity date ,price and enter tax code.

After that we maintain condition types Vendor, material and Plant level....

So in the same scheduling agreement we are adding one more material and giving same tax code.....Is there any possibility,so that system should copy condition types when we choose this tax code....rather than entering again and again for each material....

Please do reply me...

Thanks and Regards

MK