In the chart below, reading the structure from the top we may see that price is in making LH & LL something that indicates that we are in a downtrend. Suddenly price reverses, taking out the last LH of the down move which signals a potential change of behavior.
This is the time where median lines come in play..! We use major swings points and draw a but we take no action till we see that the slope is working extremely well and the is an active one.
On its way up price finds good at the parallels of the (red, green arrows) and we are now confident that the set is an active one. From that point, every time price reaches a parallel we watch for a setup completion based on our strategy. The best option is to trade setups in the direction of the trend. A final word should be that it is a better option to draw your sets in the higher timeframes to have a better picture on the markets. In case you wonder which of the three (Schiff, modified) you should choose, the answer is to go with the one which represents the better path of price with the most valid slope.
I could write a ton more of info about median lines but there is a limit on the number of characters we should use in the posts.
I hope you find this useful..! Ask comments below, and like the post so others can see..!