When you start up Nifi and add the Lingk template, your screen should look like this:The top menu lets you add different components into Nifi, including Processors, process groups, and a template. This is where you must have added the Lingk template from after uploading it from the Operate panel.The top sub-menu shows the status of various components and process groups.The main window had a Navigate panel that you can use to resize, change view, zoom in and out.The Operate panel helps you configure various options including starting, stopping, enabling, and disabling components in the process group. You can also use the Operate panel to copy, paste, delete, save and upload objects.To configure any object, you can either click it, and click Configure in the Operate panel, or right-click and click Configure. If you double-click a process group, it will expand the process group and show the children. Alternatively, you can right-click the process group and click Enter group.The lower left of the screen shows you how to navigate from child to parent (and vice versa).When you double-click a process (not a process group), it shows the Configure dialog box for that processor. Clicking the Port 3002 processor gives us this:So with a combination of breadcrumb navigator and a double click action, you can easily navigate between parent and children process groups and processors.