Once enabled, you'll find a small triangle above your screen, see example below. You can move this triangle to adjust your charts shift.
When adding Forex Freeway indicator to MT4 chart, be sure your chart has "Chart shift" settings on, otherwise you won't see the indicator - it will have no room to paint itself on the right.
(Right click on your chart -> Options -> Common -> enable Chart shift)
This one has additional horizontal lines across the Freeways roads, called "Road blocks". See example below (the indicator is seen better on the black chart background)
Road block show where the price can trip off - at support/resistance levels. Again we have different support/resistance levels for different time frames (different roads).