@bassman6805
Look in the /opt/retropie/configs/all/retroarch-joypads/ directory and there should be a .cfg file with your controller settings in it.
For example I have a wireless Xbox 360 controller so mine is:
/opt/retropie/configs/all/retroarch-joypads/Xbox360WirelessReceiver\(XBOX\).cfg
In your version of that file you can put your hotkey settings. It will be in what looks like a random order.
I believe the ones for your controller will end with _btn
https://github.com/retropie/retropie-setup/wiki/RetroArch-Configuration#hotkeys
Another example:
input_enable_hotkey_btn is for controllers and input_enable_hotkey is for the keyboard.
I have manually re-organized mine so I can read it easier but here is my hotkey section
# Hotkey button
input_enable_hotkey_btn = "8" #Select
# Exit emulator
input_exit_emulator_btn = "9" #Start
# Saves state
input_save_state_btn = "1" #B button
# Loads state
input_load_state_btn = "2" #X button
# Move to next save state slot
input_state_slot_increase_btn = "5" #R button
input_state_slot_increase_axis = "+0" #Right on D pad/Left Stick
# Move back a save state slot
input_state_slot_decrease_btn = "4" #L button
input_state_slot_decrease_axis = "-0" #Left on D pad/Left Stick
# Reset ROM
input_reset_btn = "0" #A button
input_reset_axis = "-1" #Up on D pad/Left Stick
# Toggle RetroArch menu
input_menu_toggle_btn = "3" #Y button
# Volume controls: mute, volume up and down
input_audio_mute_axis = "+1" #Down on D pad/Left Stick
input_volume_up_axis = "-3" #Up on Right Stick
input_volume_down_axis = "+3" #Down on Right Stick
# Take screenshot
input_screenshot = "7" #Right Trigger button
Determining Button Values
https://github.com/retropie/retropie-setup/wiki/RetroArch-Configuration#determining-button-values