Launch the application and from the Settings menu select Proxy list. After that, in the provided window enter the domain name or the IP address of the proxy server you want to add, press the : key and enter the port number. If it is necessary, add the login name and password separated by : sign. After you finish, press OK. Also, if you want, you can use Google search engine to find valid proxy servers. If you still need assistance, you can use the contact information from the official web page to get in touch with the developers.