Open your 3CX welcome email. If you do not have a welcome email, please reach out to your system administrator to get a new welcome email.
From the 3CX welcome email, open the web client link for "Outside the office"
Log in with the credentials from your welcome email. Please note that if you do too many attempts from the wrong IP address you could get blacklisted if your admin hasn't already whitelisted your IP address.
In Chrome (or any Chromium-based browser) you can activate the browser extension to add more features to calling on your client.
Add to Chrome!
Make some calls from your browser.
Make some calls from your extension.