Arduino push button problem

hey guys i`m new here and i need help

i am currently doing my final year project and i am programming a stimulation for washing machine,
i have one push button that control 3 LEDs for material type selection, and one more button that controls 3 LEDs for water level selection. Here is the problem, when i wan to push the material push button to select the material, why is my water level LED affected? it suppose to only control the material LEDs and not the water level LED. Please help me thank you :frowning:

Hi, welcome to the forum.

You question reads to us like this: I have something, and something is not right, can your 6th sense tell me what is wrong ?

So please tell us which Arduino board you have, how the buttons and leds are connected, did you use any resistors ? and show us your sketch.