WorkloadWall is running.
Open http://localhost:3000 on this Mac, or http://workloadwall.local:3000 from any computer on the network, and finish the setup: your company name, the first admin sign-in, and the license agreement.
To change the port, or to remove WorkloadWall, the Help inside the app has the details (Help → Linux, Raspberry Pi and Mac). To uninstall from Terminal: sudo /Library/WorkloadWall/uninstall.sh.