Converting PR into Schedule lines in mass

All SAP Gurus,

We have scheduling agreements for several materials.

Now in day to day working, various user departments rais the PR for these items.

Then we enter the schedule for these items into the scheduling agreement (with reference to PR).

But the problem we face is that we need to go to each scheduling agreement indivisually and enter the schedule against the each line item.

Is there any short cut procedure for this?

Regards,