switch to desktop 1)
defaults write /Users/mea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 79 "{enabled = 0; value = { parameters = (65535, 123, 262144); type = 'standard'; }; }"
defaults write /Users/mea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 80 "{enabled = 0; value = { parameters = (65535, 123, 393216); type = 'standard'; }; }"
defaults write /Users/mea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 81 "{enabled = 0; value = { parameters = (65535, 124, 262144); type = 'standard'; }; }"
defaults write /Users/mea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 118 "{enabled = 0; value = { parameters = (65535, 18, 262144); type = 'standard'; }; }"
defaults write /Users/nwea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 79 "{enabled = 0; value = { parameters = (65535, 123, 262144); type = 'standard'; }; }"
defaults write /Users/nwea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 80 "{enabled = 0; value = { parameters = (65535, 123, 393216); type = 'standard'; }; }"
defaults write /Users/nwea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 81 "{enabled = 0; value = { parameters = (65535, 124, 262144); type = 'standard'; }; }"
defaults write /Users/nwea/Library/Preferences/com.apple.symbolichotkeys AppleSymbolicHotKeys -dict-add 118 "{enabled = 0; value = { parameters = (65535, 18, 262144); type = 'standard'; }; }"
crash so I re-enabled the Apple function keys
defaults write -g com.apple.keyboard.fnState -bool false