The list itself
Names, pictures, units
Every item carries a photograph, a unit of measure and a case pack — trestle tables in eaches, gaffer tape in boxes of twelve. That is what a department head needs to ask for the right thing, and what a buyer needs to add it up without getting it wrong.
Getting your lists in
Bring the spreadsheet you already keep
The failure message is the whole feature. Not “row 47, column F”, but “three items have no unit of measure, and two duplicate rows above them” — so you fix the sheet in your own vocabulary, and nobody has to learn ours.
The second event
Set it up once
The catalog carries over. That is usually the point at which the second event costs materially less than the first, because the expensive part was never the software.