What is the guest policy at ZO. spaces? February 05, 2020 16:16 Updated One external guest per eligible ZO. Member (with scan of QR code). Upon request, please call your designated ZO. space ahead of time if you wish to bring more than one guest. Related articles How do I get a refund for a ZO. service? How do I book a private event at a ZO. space in Rockefeller Center? Comments 0 comments Article is closed for comments.