I am partially repeating things said above -- sorry.
In English, we make a distinction between the A/C itself and the flow of cold air, which comes from a fan or a vent. We redirect the fan or vent, not the A/C.
In cars, there are several vents facing the front seats, and you can easily change their direction. In homes, a standalone air conditioner (like one in a window) has a vent whose direction you can change. Central A/C has vents in each room: some you can re-direct (change the direction), others you cannot. In places I have lived recently, the horizontal direction is not changeable but the vertical direction can be changed.
In some office buildings, vents are in the ceiling, and changing the direction air flows from the vent requires a professional A/C expert using a ladder to go inside the ceilling vents. Sometimes in the past I was put in a cubicle that got a "draft" (cold air flow) all day from the A/C, and had to ask them to get a workman to change it.