To add a Dynamic Chart to a Service Portal page, follow the steps to the Add widget to page https://docs.servicenow.com/bundle/helsinki-servicenow-platform/page/build/service-portal/task/t_AddWidgetsToAPage.html article and search for the Dynamic Chart widget you want to add. These are all prefixed with ‘Dynamic’. Once you find the Dynamic Chart you are looking for, drag it onto your page layout. Once you’ve added the widget to the layout, click the pencil icon on the widget to open the widget instance options. In the Dynamic Chart field, search for and select the Dynamic Chart that you want to use here. Click Save and your widget is ready to go. Just make sure that you are loading it in a page that has the URL parameters you need based on the configuration of that Dynamic Chart.