From the pipeline overview you can create a new pipeline by clicking the '+ CREATE NEW' button on the top right corner. You get prompted with a modal that asks you to give your pipeline a name. This name is for display purposes and allows you to easily recognise your pipeline. Out of the pipeline name a URL safe name is automatically created which is used during the deployment of the pipeline. You can leave an optional description to inform other users in your organization of the purpose of your pipeline.
When you create your new pipeline you will be brought to the configurations section where you can create your first configuration for the pipeline. The configuration page is composed out of a few elements that allow you to compose a pipeline by adding triggers and actions, configuring them and saving them.