Two ways — pick the one that works for you
Chrome, Edge and Brave show a small install icon inside the address bar when a PWA is ready to install.

Look at the address bar at the top of your browser
On the right side of the URL, find the install icon — it looks like a monitor with a down arrow (⬇)
Click it — an install dialog will appear
Click "Install" to confirm
If you don't see the icon, your browser may need to be on Chrome, Edge, or Brave. Firefox does not support this.
Firefox not supported
Firefox does not support PWA installation. Please use Chrome, Edge, or Brave.