First time: create the token

1. Open GitHub → Settings → Developer settings → Fine-grained tokens → Generate new token.
2. Name it e.g. website admin and choose an expiration (you can make a new one when it runs out).
3. Repository access: Only select repositories → njcuk9999.github.io.
4. Permissions → Repository permissions → Contents: Read and write. Nothing else is needed.
5. Generate it, copy it, paste it above. Keep it somewhere safe (e.g. a password manager); GitHub won't show it again.

Lost it or think it leaked? Delete it on the same GitHub page and create a new one.