Today I bought some apple wood to smoke some chicken wings. I was following an article on serious eats and it suggested to let the wood ignite for about 5 minutes before it produced smoke. I put the apple wood ontop of the already ashed charcoal and ignite it did. However, there wasn't much smoke to be had. It looked to me to be turning into charcoal. I instead put some more chunks on and closed the lid, causing the grill to bellow white smoke. The wings turned out much darker and appeared to me to have some semblance of a smoke ring, but I am unsure if I am doing the right thing.
My question is, how should I add a smoking wood to a charcoal grill? If it matters I am using a Weber kettle, not a smoker.