Global Schematic Page Properties, Page Size change for Existing Design in Allegro Design Entry CIS (Cadence 16.6)

Hi,

I've Schematic design with more than 100 pages, how to increase the page size globally for all pages instead of doing it sheet by sheet.

Please help to update. EDA Tool using: "Allegro Design Entry CIS (Cadence 16.6)"

Thanks in Advance.

Regards,

Bala