1. Select timed traffic lights.
2. Select the desired junction (select one 4-way junction for a first-timer)
3. Click next.
4. Click Add State
5. Set the desired lights on the junction (don't click 'mode', as you want to use the simplest light for a first-timer); Example: set the 2 roads facing each other - green; and the other 2 - red
6. Set the desired amount of seconds you want the lights to be with the slider (for example: 12)
7. Click 'Add'
9. Click 'Add state'
9. Set the desired lights on the junction (again, don't click 'mode' - you want simple traffic lights); Example: reverse the lights - the ones that are red - make them green, and the ones that are green - make them red.
10. Set the desired amount of seconds you want the lights to be with the slider (for example: 8)
11. Click 'Add'
12. Click 'Start'
13. Now you have a junction that has a 4-way with one of the roads having 12 'seconds' of green time (it's not exactly seconds, but it's an easier naming) and the other having 8 'seconds' of green time