1 . Open the Insomniac browser and then click on Proxy Per Tab and then click on Manage Proxy List.
2. In the newly opened tab, click on Add Bulk Proxies and then click on Export Sample File.
3. In the exported file, you can make changes and add your proxy details. It will be like below depending on the authentication method you use.
4. Once it is completed, save the file. Open the Insomniac browser page we kept open. Click on Import Proxy List.
5. Then Apply relevant settings for the tab.
6. You can check whether the IP changed or not from http://myipadd.com/