# Setting the Number of Parallel Tests Testery enables you to set the number of parallel tests to optimize how your test runs are queued up or throttle test runs so they don't overwhelm the system-under-test. #### Setting Number of Parallel Tests for a Scheduled Test Run When editing the [scheduled test run](https://docs.testery.io/get-to-know-testery/schedules), select `Show Advanced Options` and specify the Number of Parallel tests. Be sure to set this number to less than the total available for your account if you'd like to be able to have multiple test runs running at the same time. ![](https://4041872331-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MK0kYmwONk3GqQ8OhVA%2Fuploads%2Fgit-blob-56b8ec3b4cb4f5ece9d588f817a2b3174facb0be%2Fimage.png?alt=media) #### Setting the Number of Parallel Tests for an Ad Hoc Test Run You can also set the number of parallel tests when running an ad hoc test run. To do this, when creating the test run, expand `Show Advanced Options` and specify the desired number of parallel tests. ![](https://4041872331-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MK0kYmwONk3GqQ8OhVA%2Fuploads%2Fgit-blob-74b5ead575501cfbfed0bd07eecb92641691043c%2Fimage.png?alt=media) --- # 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.testery.io/get-to-know-testery/setting-the-number-of-parallel-tests.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.