Thank you, John.
My expectation is that there was some formal internal structure that assigned a specific grouping of men to specific Corporals, Sergeants, and Lieutenants - whether they called them sections, platoons, or squads - or something else.
Here is some speculation on my part (that I am trying to define):
Of course the Company commander commanded the company. The 1st lieutenant may have performed duties like an assistant company commander - today called a company executive officer. The orderly sergeant or 1st Sergeant was the same as today, the "top" sergeant in the company reporting to the Company commander, and in charge of the administration and management of the enlisted men.
The two second lieutenants would have each been in charge of half the company - two platoon leaders in today's organization. Each "platoon" would have half the enlisted men - to include two sergeants and two corporals. That would provide a company organization of two platoons, each with two squads. Each squad would have a sergeant and a corporal.
I have not found anything to support my speculation, but this seems to me to be a reasonable solution for managing 100 or more men.
I have found in the 14th Alabama personnel records that a 5th sergeant in one company was the left guide of the regiment, and another 5th sergeant in another company was the right guide of the regiment. Also, some sergeants and corporals are designated as color guard. Other than that, I am unsure of different roles of non-commissioned officers. (excluding commissary, quartermaster, ordnance, and teamster assignments).