3CX has 2 “admin” pages at this time

• The Management Console
• The WebClient Admin

The management console is the old way of doing it - simply navigate to your 3CX domain and login with your management credentials. The URL might look like: myphonesystem.3cx.us

The webclient admin is the new way of doing it - simply navigate to your 3CX webclient and login with your extension credentials. Then, click the button labelled “Admin” in the bottom left of the screen. This button will only appear if your extension has admin rights. The URL might look like: myphonesystem.3cx.us/webclient/#/office

Not all settings can be accessed from either console - you will have to use both consoles to gain full control of the PBX.