For a large group booking, you can print a rooming list from the Bookings page by filtering to just that group's bookings first. Use the booking ID if it's a group booking, or the Agent if it's a corporate booking, then print from there.
Printing by booking ID (group bookings)
Open one of the bookings in the group and note the booking ID on the summary page.
Go to the Bookings page from the navigation bar.
Enter the booking ID into the search bar. Preno filters the list to that booking's rooms.
Click Print
Click Bookings list
Printing by Agent (corporate bookings)
Go to the Bookings page from the navigation bar.
From the All sources drop down menu select the corporate Agent.
Click Print.