It will have 7 sections that will light up in sequence
How many LEDs per section? What triggers that sequence? How long between sections lighting up?
and than stay on for x amount of time.
Piss poor requirement. "a user-definable amount of time" or "3 seconds" are implementable requirements. "x amount of time" is not.
Also, one more section of LEDs will have to remain on at all times.
For which you need no coding or even a microcontroller.
I need this by end of the Day 9/12.
And, how long have you had to produce this project? Tomorrow is quite unrealistic.