Using Buttons On A Second Controller
Without modification, Jane's F-18 accepts controller 1 DirectX buttons inputs from 16 buttons and a 4-way hat switch. These are mapped in-game to the Joy1 B1, Joy1 B2, etc. slots. By checking Activate Buttons on 2nd controller in the TSH Manager, commands mapped to the Joy2 slots will function when the second controller's buttons 1 through 16, plus hat, are pushed.
Activating Joystick 2 buttons in the TSH Manager
Note that if commands are mapped to joystick 2 buttons but Activate Buttons on 2nd controller is not checked in the TSH Manager, Joystick 1's DirectX button presses will also activate the commands mapped to Joystick 2.
Mapping Joystick 2 buttons in the Custom Keyboard mapper