There are multiple ways of doing it. The direct flame (sear) portion is to caramelize the meat. If your direct flame is screaming hot, that helps. Bottom line, throw it on the direct flame and check it at 1 min intervals. When you see the sear you want, flip it. I always start a timer on my phone whenever grillin' steaks.
I buy steaks that are 1 to 1-1/2" thick. I sear first, then indirect to finish. I've tried it with a reverse sear, but prefer the initial sear method.
1. Cold, thawed, or freshly purchased, steak: sear 3-4 mins per side, then indirect until 5F below target IT, anywhere from 20-40 minutes depending on my fire and the wind.
2. Semi-thawed: sear 4-6 mins per side, then indirect for 20-40 minutes.
3. Frozen solid (try it): 8 mins per side, then 25-40 mins.
Hope that helps.