Yes, i know how to connect the multiplexer. what i dont know is how to make one button to turn on the led other button to turn off the led, because if i just write digitalwrite(MYLEDPIN, VALUEFROMTHEMULTIPLEXEROUTPUT) both buttons are gonna light up the led and i want one button to turn on the led and the other button to turn off the led. thats why i dont understand it. why im using 2 buttons? i dont have 6 more buttons to wire them.