This Router App adds nodes to the Node-RED Router App and works only after the Node-RED Router App is installed.
The dashboard lets you create a web UI to interact with your Node-RED flows and applications. For example, it can show live data from the input nodes, or the user can control the behavior of the flow. Adding this router app to the router will add the Dashboard nodes as seen in the figure below. Compared to the basic Dashboard package, it contains several additional nodes. The running Dashboard web page is accessible at https://<ip-address-of-the-router>:<configured-port>/ui. See more information in the official documentation: https://flows.nodered.org/node/node-red-dashboard