The Directive Generator allows you to generate the Pipeline code for a Declarative Pipeline directive, such as agent, options, when, and more. Choose the directive you're interested in from the dropdown, and then choose the contents of the directive from the new form. Once you've filled out the form with the choices and values you want for your directive, click Generate Declarative Directive and the Pipeline code will appear in the box below. You can copy that code directly into the pipeline block in your Jenkinsfile, for top-level directives, or into a stage block for stage directives. See the online syntax documentation for more information on directives.