i dont know how outdated this is but try it
Unit "Designator" and "10-8" times
First Shift (10's; 0600-1400 / 20's; 0630-1430)
Alpha/Baker/Charlie - 11/21 (First Shift Sergeants)
Alpha/Baker/Charlie - 1x/2x; x>1 (First Shift Officers)
Second Shift (30's; 1400-2200 / 40's; 1430-2230)
Alpha/Baker/Charlie - 31/41 (Second Shift Sergeants)
Alpha/Baker/Charlie - 3x/4x; x>1 (Second Shift Officers)
Third Shift (50's; 2200-0600 / 60's; 2230-0630)
Alpha/Baker/Charlie - 51/61 (Third Shift Sergeants)
Alpha/Baker/Charlie - 5x/6x; x>1 (Third Shift Officers)