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# Choose Test Field Description

The **Choose Test Field** allows you to choose which Monitor Type parameters you would like to use to perform the test. It includes all of the Monitor Types, giving you every option offered to run a test. You have the option of either inputting new test information or you can use the details from an existing Monitor Scenario by using the “Prefill With” dropdown list.  
  
**Related Links**  
*   [Prefill With Field Description](https://abkb.crisp.help/en-us/article/prefill-with-field-description-1ligtfl/)
*   [Test Station Field Description](https://abkb.crisp.help/en-us/article/test-station-field-description-11c933g/)