To get Xbox 360-style prompts in Plutonium BO2 instead of keyboard keys, make sure your controller is plugged in, then open your config_mp.cfg (or config_zm.cfg for Zombies) in %userprofile%\Documents\Plutonium\T6\players\ and add:
seta cl_controller "1"
seta in_useController "1"
seta in_promptGamepad "1"
Save the file and restart the game — prompts like “Hold F to spawn” should now show the correct Xbox buttons. Make sure in-game controller settings are correct and no HUD mods are overriding prompts.