Be organized! Have carts staged for each block to put processed items into. Know your department and class numbers. Have a dedicated table/Z-Rack for team members to bring items that don't scan with the inventory company's system. You'll start in the backroom first and then move onto the salesfloor. Have at least 2-3 printers ready (loaded with UPC and clearance rolls to processes merchandise). Tagging gun for Softlines merchandise and a roll of the white tags to make missing tags for Softlines merchandise. Tape, markers, pens and blank paper. And it helps if there are 2 of you manning the NOF table. Otherwise if you were like my store last inventory, it was HELL trying to get things tagged and entered into the inventory company's system. And get empty boxes for any salvage that is processed throughout the night. We had tons of salvage, be prepared.
There also should be a game plan to have team members start putting away the freight that you've already processed but after the inventory company is complete on the sales floor.