LEDs and Multiplexing

Hi, i am a beginner in arduino programming and I need help please !

I would like to control 240 leds using 16 multiplexers CD74HC4067 with only one who is the master,
you will find attached the map!

you will find attached the map

No that is a printed circuit board ( PCB ) not a map, what ever one of those is.

I would like to control 240 leds using 16 multiplexers CD74HC4067

You do not use CD74HC4067 multiplexers to control an LED. Wrong part, wrong circuit.

What do you want?

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Wow! You went to all that trouble to do something quite useless!

To control 256 LEDs, you use four MAX7219s.

If you cared to explain how you wanted your LEDs to be arranged, we could explain how best to approach it, but basically the matrix boards readily available on eBay are the most straightforward, even if you do not want to use the 8 by 8 matrix displays they include.