It seems that Antares Autotune EFX plug-in can't be used with NCH MixPad. On the official website of NCH product, the Antares plug-in isn't among the compatible ones. To load the plug-in into the MixPad, you need to go under Effects > VST Plug-in > select the location where this is installed and click OK. The two programs were tested, but I couldn't manage to make them work together.
