Download the Proxifier software for your Operating System (Windows and Mac supported), install it and launch it, and authenticate. When the interface opens, click on the “Proxy Server” or the corresponding button in the menu or tool bar. A dialog box will open that you can use to add proxies, remove proxies, and also edit already added proxies. To add a proxy, click the “Add” button. Clicking the “Add” button will open a dialog box for you to enter the proxy details. You can enter the proxy address and port in the first section. Below that, you have the option to choose the proxy protocol. For the authentication, if the authentication supported is the username and password authentication, check the box provided and enter the correct username and password for authentication. Click the OK button to save the setting.