One application render multiple monitors

hi everyone! In general, run one application will output to the main display monitor. My computer plugged two monitors. so I want to create an application that has one character. The character will attach two cameras component. Run the application will create two windows. One camera renders one window. One window display on the main display monitor, the other one window display on the secondary display monitor. so how should I do this? please help me! Sorry for my English.