Nexgrill 720-0018-LP - Manual (Page 13)

— 2 pieces of truss head M4x8mm screw and 2 pieces of M4 split lock used
to attach the side burner handle are already screwed into the handles (see
figure below). Remove the screws from side burner handle and align with
the holes in the side shelf, and then tighten up the screw. Then put the
grease tray in the grill( see figure below).
ASSEMBLY INSTRUCTIONS
— Hang up the utensil hooks on left side shelf as shown in figure below