Node-RED
Node-RED provides a browser-based flow editor that makes it easy to wire together flows using the wide range of nodes in the palette.
If you have installed the Full image, then Node-RED is pre-installed, including the node-red-contrib-chirpstack package which provides several nodes to interact with ChirpStack.
Links:
Access Node-RED
Node-RED can be opened from the web-interface, by clicking Applications in the left menu, and then clicking the Node-RED icon.