Anything here can be used to answer a question when the task is set to "Company question". The description is the most important part: it is the only thing the model reads when deciding which document to open.
There is no login yet. Anyone with the link can read what you put here, through the model. Only add documents you would be comfortable seeing on a public website — style guides, tone of voice, service descriptions, published prices. Do not add contracts, staff records, or financials.