BuildCo is small building company with the stall. The owner to reduce time spent on administration by simplifying the company’s paperwork. This…

BuildCo is small building company with the stall. The owner to reduce time spent on administration by simplifying the company’s paperwork. This paperwork includes provides quotes and invoices, as well as managing orders and receipts for building materials. Most of the paperwork is completed manually and copies are stored in filing cabinets. However, quotes and invoices are produced on a word processor and the stored on a computer, with printed copies also stored in the filing cabinets. The owner is not sure that all the current paperwork is necessary. Which investigation technique would be MOST effective in establishing the need for item of paperwork?