C# Enable Checkbox In Another App?

I've been able to launch this program (ninjatrader) from within my C# Forms program.

private Process process;
process = System.Diagnostics.Process.Start(@"C:\Program Files (x86)\NinjaTrader 8\bin64\NinjaTrader");

I would like to also enable the checkbox named "Enabled". So far I haven't found a way to do this. I have access to Ninjatrader directly through witing indicators in C# but there is no documentation on how / if you can enable a checkbox. Anybody have any Ideas? - Thanks so much!