The Statistics tab includes information for executed REST methods grouped by the HTTP request types (GET, POST, PUT, and so on).
For more granular groupings, regular expression can be used to display individual REST calls. This is set up on the Configuration tab > Gateway Configuration section > 'Statistic groups' parameter. For more information, refer to the Statistic groups section of the Configuring a Gateway Integration Endpoint topic or the Regular Expression topic in the Resource Materials online help documentation.