The easy way — nothing to download. Open farglance.com/computer, enter your glasses code (below), and share your screen. In your browser's menu choose Install Farglance to keep it as an app in your Dock.
Install the background helper — it starts with your computer and needs no window open. Paste this in Terminal (Mac) or PowerShell (Windows):
Permanent — you'll paste it into the installer once.
Put on your Meta Ray-Ban Display, open Farglance, and follow the welcome. When it shows a 6-character code, type it into the box here.
Your glasses and this computer are linked to your account. As long as this computer is on and signed in, your glasses connect on their own — no codes, ever again.