There are several ways you can cook burgers on the grill.
Keep in mind what kind of meat you buy,
What kind of Charcoal you use,
and the type of grill you are using.
If you happen to have a cheap $20-30 grill, Great! These lil Grills work Great, but do not like to stay sturdy over a few years.
Once you place your burgers on such a grill and your fire takes over, all you have to do is close your lid (and vents) and your fire will die out shortly.
Once your flames have gone out, reopen your grill and monitor your burgers.
Continue this process if lots of fire resume.
I do not recommend Leaving your small grill closed for long periods of time while cooking, soot from the ashes can coat the meat, looking black/gray and tasting horrible.
If you have a larger area inside like my grill above (or a smoker) you can close the lid while cooking your burgers.

Give your burgers a 7-8 min cook time on each side until they look ready.

I do not recommend Wal-Mart Brand Charcoal of any kind. It is very rich in fuel and thus transfers into your meat. The meat will taste different and you will be exhaling horrible tasting gas (sometimes over a few days).

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