Remap Function keys on MBP to use in 3270 emulator?

I use a 3270 emulator for work which relies on the use of the Function Keys for navigation. Keys F1 - F24 are used frequently and while I can create "clickable" versions of the keys, it's not as efficient as having them on the keyboard.

Is there a way to remap the MBP keys to use as function keys F1-F24?