Your players need to have a decent attacking position rating to actually perform it.
So when i had a serie B team i asked this same question. When i started using clubs that were better, if you pass to them the player that just passed it will continue a run getting to space for you to pass to him
A "one-two pass" or as its called in the game "give and go" Its when a player passes the ball then the receiving player quickly passes the ball back after the passer makes a run past an opposing player.
Idk if the term the TC used is the proper one in english or if maybe its called something else in other parts of the world but TC might have just translated the term from spanish since in spanish its called that or wall to wall.
Its referred to that way because its as if you kicked the ball to the wall to get around a player like in street soccer.