# Custom Definition Operations Custom Definitions is the group of definitions which can be used to determine which logs will be gathered from target servers, filtering options and settings that VirtualMetric will use to collect logs. You can enable and disable the log providers and apply filtering options on log providers, so VirtualMetric Collector can use these definitions to collect the appropriate logs from the target servers. Changing definition settings will be immediately applied to VirtualMetric Collectors. In this section, you will learn following operations: * Add a custom definition fields * Edit custom definition * Remove a definition --- # 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.virtualmetric.com/settings/logs/custom-definition-operations.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.