Cyclone and BDmar are correct.
Be very careful when working with a high speed air bleed. This is the most sensitive circuit in the carb. The high speed AB should be changed in .001 increments. The carb/engine is very sensitive to hsab changes and this is where you can get into trouble the quickest. Difficult to tune without a/f instruments, clocks, dyno and pyrometers.
The intermediate can be used for just that. Intermediate fuel changes. This circuit comes in just off idle and can be tuned to assist acceleration. Again, it is hard to tune the intermediate ab without clocks, dyno or a/f info.
The idle air bleed is the easiest to work with. On the idle air bleed. First set your mixture screws for a decent idle and good throttle response. Then check to see how many turns your screws are out. If they are less than one turn out, go up on the idle air bleed a few thousands and check again. If they are more than 1 1/2 to 2 turns out, then go down on the idle air bleed a few thousanths. Generally you wan the engine to idle decent and have good throttle response at the 1 1/2 turn (3 flats) out. Of course pump shot and intermediate come into play on the response with a three circuit. If you cannot tune the idle with a few step changes in the air bleed, then it is time to resize the idle fuel jet or orifice. This actually comes into play with ALL the circuits as you are balancing fuel and air needs for the engine requirements.
Again it is best left to a sharp carb tuner. Always remember where you started from so you can put everything back the way you found it if you goof it up