The AI assistant answers customers from the documents you add on the Assistant documents screen: price lists, refund policy, opening hours, questions customers often ask. When it uses a document, the assistant adds a short source at the end of its answer, e.g. "(Source: Price list 2026, page 2)". If it finds nothing, it says it will check with staff; it never guesses.
Who can do this: Owner, Manager, Assistant editor.

Three ways to add a document
Press Add a document (or Add a FAQ while the list is empty), then choose one way:
- Upload a file: a PDF, Word (.docx) or text file (.txt, .md, .csv), up to 10 MB each. PDF files can have up to 300 pages.
- Paste text: give a Document name and paste the Content from Zalo, Word or your notes (up to 100,000 characters).
- FAQ: write the Question (up to 500 characters) and the Answer (up to 4,000 characters). The assistant answers exactly from this.
Steps:
- Choose how to add it and fill in the content.
- Choose the Document language (Vietnamese or English).
- Press Upload (for a file) or Save.
Only add what you want the assistant to tell customers. Do not add bank account numbers, passwords or customers' personal details.
Reading status
Each document under Your documents has a status:
- Reading the document: the system is processing it, usually within a minute.
- Ready for the assistant: the assistant can now find content in it.
- Could not read it: a line below says why and how to fix it.
Common reasons for Could not read it:
- The PDF has a password: remove the password and add it again.
- The file is a photo with no text: use Paste text to paste the words.
- The file is too long or over 300 pages: split it into smaller files.
- Anything else: press Try again; if it still fails, contact COREBIZS.
Ask like a customer
The Ask like a customer box at the top shows which passage the assistant finds for a question.
- Type a question customers often ask; Vietnamese with or without accents works (e.g. "gia ve di da lat bao nhieu").
- Press Try it.
- Read the passages found, with the document name and page number when there is one.
If nothing is found, add a document or a FAQ that answers it. To see the assistant's full answer, use Try it on the AI assistant screen — the test uses your business's real documents.
Remove a document
- Press Remove on the document.
- Confirm. The assistant no longer uses it to answer customers. Removing cannot be undone.
Editing a document is not available yet. Remove the old one and add the new version.
Limits
- Each business can have up to 200 documents and 200 MB in total. What you use is shown next to Your documents, e.g. 12/200 documents · 3.4 MB/200 MB.
- These limits are the same on every plan.
- The same file cannot be added twice.
- Reading documents costs a little AI usage, shown as Processing documents on the Usage screen.
If the screen says The server is not ready to receive documents yet. Please contact COREBIZS., message COREBIZS.