Setting the Button Function
Refer to "Functions for the buttons" before setting.
Example
Select "Required" for the button.
Order Option
1Required
2Optional
3Disabled
BUTTON
FUNCTION
FUNCTION 
CHANGE SET
Required
BUTTON
FUNCTION
FUNCTION 
CHANGE 
SET
1 Push the FUNCTION button for 3 seconds.
2 Push the FUNCTION button and position the " 
" next to the "BUTTON FUNCTION" mark.
3 In the case of the example, push the CHANGE button to set at "1". And then push the SET button.
4 Push the SET button once again.
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