Costco Nexgrill Monster What Is A Searing Burner Used For On A Gas Barbecue Grill?

What is a searing burner used for on a gas barbecue grill? - costco nexgrill monster

I bought a Costco Nexgrill gas as a replacement for the aging and rusty Sunbeam gas grill. You do not have much choice at Costco, but often a good value for money.

In any case, the new grill will be on fire with a separate rotisserie burner and burner. The burner of the grill makes sense, but what is the hot burner used. Is it "grab" start something, then grilled main beef? How long? Why? What is the difference between something sharp and just the grill?

See website for more information?

Thank you in advance.