- Open quorly.dev/app in Chrome.
- Open the Chrome menu (⋮) → Cast, save and share → Install page as app. On some versions the same option appears as a small install icon at the right end of the address bar.
- Confirm. Quorly opens in its own window and appears in the launcher and shelf.
After that it behaves like any other Chromebook app: pin it to the shelf, open it with the launcher, close it like a window.