You will have to get used to how to do it, I'm set at 30 Watt on my Geekvape Aegis Legend 3, the air holes are closed down to about 3mm open. You will have to experiment with the length of your inhale and the speed, too fast and you won't get a good hit.
Keep the button pressed until you've stopped counting seconds while inhaling, let go of the button save a bit of breath to inhale a bit of fresh air in afterwards and hold it in, if you are blowing clouds out it hasn't settled in your lungs, so you want to hold in a sensible amount of time and hope to blow out minimal to no vapour (It will vary on how long you've hit it for).
