# Support for Multiple Registries A single benefit program in PBMS is not limited to one registry; it can span across multiple registries. Rule definitions such as eligibility, disbursement, and entitlement can be written to work across these registries, making programs more versatile. PBMS also supports set operations—union, intersection, and minus—between registries, allowing administrators to construct complex beneficiary lists that meet the needs of specific program requirements. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.openg2p.org/products/pbms/features/support-for-multiple-registries.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.