After creating Hosted Payment Pages in Zuora, you can configure the Hosted Payment Pages settings in Salesforce.
If you are using version 5.100 (Q2 '13) and higher, we've introduced a simpler methodology for you, and you should follow the new instructions posted here. The instructions documented in this article are for users of older versions of Zuora Quotes - version 5.92 (Q1 '13 release) or earlier.
To configure the Hosted Payment Pages settings, edit the HPM Setting object. The HPM Setting is a protected Custom Setting object that is used to store critical security information. This object is accessible only by an Salesforce user with administrative permissions. It is not accessible via API.