Individual neopixels

Does anyone know how to have all the leds light be low white and 1 is green and with a press of a button the green light will move to the next pixel over?

Pretty straight forward. Have you tried anything? How did it go?

If you have not started coding yet, there are button tutorials to help with understanding how to use buttons. And many neopixel tutorials.

What equipment do you have?

There are tutorials, a library, and examples found at the Adafruit web site.