SSRS - how to print subreport after last page of multipage main report prints

Hello All:

I need help in figuring out how to print a subreport on the last page of it's main report with one parameter passed between them in SSRS.

I need to print a purchase order and every time it prints a follow up terms sheet prints after the main PO prints with the purchase order number printed on both the main and sub report.

I need assistance on the best approach for this.

Any ideas on the best approach for this would be very helpful.

Thank You

Rm103