Sharing one WhatsApp Business number with your team and an AI agent
Most small businesses want customers to have one WhatsApp number, while several people answer it: the owner, someone on the counter, perhaps someone in the office. WhatsApp's multi-device feature makes that possible without passing one phone around. Add an AI agent and you have one more pair of hands on the same chats. This guide explains how one number reaches several devices, how to divide the work so nobody answers twice, how the agent fits in through Spaces, and how to keep the number safe as people come and go.
How one number reaches several people
A WhatsApp account belongs to one phone number, and one phone is the main device. You can then link other devices to the same account, such as a computer on the shop counter or a laptop in the office. Each linked device shows the same chats, and anything sent from it comes from your business number.
WhatsApp limits how many devices can be linked at once, and the exact number can change, so check the Linked devices screen on your phone. Linked devices keep working for a while when the phone is off, but WhatsApp signs them out if the main phone is not used for a long time, so open WhatsApp on it regularly.
Menu names and positions change between app versions and phones, so if something looks different on yours, look for the nearest match or check the platform's own help pages, which are always more current than any guide.
Your options
| Approach | How it works | Good for | Watch out for |
|---|---|---|---|
| One shared phone | Everyone picks up the same handset | Very small teams in one place | No idea who said what, and the phone walks off |
| Main phone plus linked computers | The owner keeps the phone, the team uses linked devices | Most small businesses | Two people answering the same chat |
| A number per team or branch | Separate accounts for sales, support or each shop | Businesses with clear separate jobs | Customers saving the wrong number |
| The WhatsApp Business Platform | A provider-run set-up with many agents | Larger teams with high volume | Different rules, templates and costs |
For most small businesses, the second row is the right one. It keeps one number, one set of chats and one account history, and you can see and remove every device from the main phone.
Setting up linked devices for the team
- Decide which devices need WhatsApp: the counter computer, the office laptop, the owner's tablet.
- On each device, open WhatsApp for that computer or WhatsApp Web. It shows a QR code.
- On the main phone, open WhatsApp, go to Linked devices and scan the code.
- Name or note each device so you know which is which in the list.
- Turn on two-step verification on the main phone, so the number cannot be moved to another phone without your PIN.
- Check the Linked devices list once a month and log out anything you do not recognise or no longer use.
Where the AI agent fits
Spaces connects WhatsApp as a linked device. You scan a QR code with the phone that has the number, the same way you would link WhatsApp on a computer. So the agent is one more entry in your Linked devices list, and it uses one of the places a team member's computer would. If WhatsApp says it cannot link more devices, log out one you no longer use first.
Once connected, the agent sees the same chats your team sees and replies from the same number. Customers see one business, whoever is typing. That is the strength of this set-up, and also why you need a few simple rules.
Who answers what
The most common problem with a shared number is two people answering the same customer, or nobody answering because everyone assumes someone else did. Agree the split before you connect the agent.
| Kind of chat | Who answers | How everyone knows |
|---|---|---|
| Everyday questions: hours, prices, availability | The AI agent | It answers within its notes and tags the chat |
| Bookings and orders | The agent takes the details, a person confirms | Tagged "booking" or "order" and given an owner |
| Complaints and refunds | The owner | Handed to the owner, so the agent stays out |
| Suppliers and trade | The office | Tagged "supplier", and the notes tell the agent to leave them |
| A regular who always talks to one person | That person | Handed to them for good, until handed back |
In Spaces, conversations can carry tags and an owner, and any chat can be handed to a person. While a person has a chat, the agent stays out of it completely, with no replies, scheduled messages or routines there. WhatsApp Business labels in the app still work alongside for your team.
| What your agent is told | What it means | What to do |
|---|---|---|
| HANDED_OVER | A person on your team took over this chat, so the agent stays out of it. | Nothing. The agent stays out of this chat until it is handed back. |
Avoiding double replies
- When a team member starts answering a chat on their computer, hand it to them first. A sentence to the agent in your chat app is enough, or the agent can do it when it meets something on its hand-over list.
- Ask the team to sign longer replies with their first name, so customers and colleagues know who is speaking.
- Agree a quiet rule: if a reply already went out in the last few minutes, nobody adds another without reading it.
- Hand chats back to the agent when the person is done, so the customer is not left waiting next time.
A worked example
Names and details are examples.
| Who | Message |
|---|---|
| Customer | Hi, can I bring my bike in for a service on Thursday? Also the last repair is clicking again. |
| AI agent | Hi Neil, Thursday is fine. Drop it off any time from 8:30 and it should be ready by 17:00. I am sorry about the clicking. I have passed that part to Jamie, who did the last repair, and he will reply here shortly. |
| Jamie (counter computer) | Hi Neil, Jamie here. Sounds like the gear cable has stretched. Bring it Thursday and I will look at that first, no charge for that part. |
| Customer | Brilliant, thanks both. |
The agent answered the booking from its notes and handed the complaint to the person who knew the job. Once Jamie had the chat, the agent stayed out, so Neil got one clear answer instead of two.
When someone leaves
- Log out their device from Linked devices on the main phone on their last day.
- Hand back to the agent, or to someone else, any chats they owned.
- Change the two-step verification PIN if they knew it.
- Remove them from any notes that tell the agent to hand chats to them.
Logging out a linked device leaves the conversations on the main phone and on every other device untouched.
Notes to give your AI agent
Our WhatsApp team:
- You answer everyday questions on this number. Jamie (counter) and Priya (office) also answer from their computers.
- Bookings: take the day and the bike, confirm drop-off from 8:30, tag "booking".
- Problems with a past repair: apologise, hand the chat to Jamie.
- Refunds and complaints: hand to Priya.
- Suppliers: tag "supplier" and do not reply.
- If a person has replied in a chat in the last 30 minutes, do not add a reply.
- If Spaces says the chat is handed over, stay out.Common mistakes
- Leaving old laptops linked, so a former employee can still read customer chats.
- Letting the main phone sit in a drawer for weeks, so linked devices get signed out.
- No hand-over, so the agent and a person answer the same customer.
- Everyone starting new chats from the shared number without thinking about the total.
- Using a modified or unofficial version of WhatsApp to add more devices. WhatsApp can ban accounts that use them.
What if...
| Situation | What to do |
|---|---|
| WhatsApp says it cannot link another device | Log out a device you no longer use, then link the new one. |
| The agent stops seeing new messages | Check its entry is still in Linked devices. If it has gone, reconnect it in Spaces with a new QR code. |
| You get a new main phone | Move WhatsApp to the new phone first, then check every linked device and relink any that were signed out. |
| The whole team is off for a day | Let the agent answer and tag anything that needs a person, or pause all sending if you prefer. |
| What your agent is told | What it means | What to do |
|---|---|---|
| ACCOUNT_NOT_CONNECTED | The platform signed the account out, or asked for a security check. | Open your dashboard and reconnect the account. Sending stays paused until you do. |
Who you message
Summing up
One WhatsApp Business number can serve a whole small team: a main phone, a few linked computers and an AI agent connected through Spaces as one more linked device. The set-up is easy. What makes it work is a clear split of who answers what, hand-over whenever a person takes a chat, and a monthly look at the Linked devices list. Keep new chats few across the whole team, and the number stays as healthy as it was when one person answered it.
Pricing
FAQ
Can several people use one WhatsApp Business number?
Yes. Keep the number on one main phone and link other devices, such as computers, to the same account. Everyone sees the same chats and replies from the same number.
How many devices can I link to one WhatsApp number?
WhatsApp limits how many devices can be linked at the same time, and the number can change. Check the Linked devices screen on your phone, and log out any you no longer use.
Does an AI agent take up one of the linked device places?
Yes. Spaces connects WhatsApp as a linked device, so it appears in your Linked devices list like a team member's computer.
How do I stop the agent and a person answering the same customer?
Hand the chat to the person. While they have it, the agent stays out completely, until the chat is handed back.
Can customers tell who on the team is replying?
Not unless you tell them. Everything comes from the business number. Ask the team to sign longer replies with their first name.
Does Spaces limit messages my team sends from their own computers?
No. Spaces paces only what goes through Spaces. WhatsApp sees every message from the number, so keep new chats few across the whole team.
What happens to chats when I log out a team member's device?
Nothing. The conversations stay on the main phone and every other linked device. Only that device loses access.
Should each team member have their own WhatsApp number instead?
Usually not. One number keeps customers in one place and keeps the account history together. Separate numbers suit separate branches or clearly separate jobs.