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The Four Lines That Say What This Group Is, and What It Isn't
You'll come away with the four lines that explain the group written into its description, which everyone who joins sees, and pinned at the top of the chat, so anyone who arrives knows what this is without having to ask you.
By Yodai · Published September 6, 2026 · Updated October 12, 2026
You've already decided the group's rules, but they live in your head, not where someone joining with no context can read them. You create the group, add the fifteen customers who were already on your broadcast list, and don't write anything else. Three hours later, someone asks if this is for canceled appointment alerts or if it's also okay to ask about the price of a hair color. Another sends a one-minute voice message wishing everyone good morning. A third, two days later, forwards their cousin's Facebook event.
Nobody did anything strange. They read the group's name, not an explanation, and acted accordingly. You may already be clear on why the group exists and who you add to it. But that decision lives in your head until you write it where everyone can see it, on day one and every day after. There are two places to write it: the group description, which anyone who joins can see, including someone who arrives months later, and a message pinned at the top of the chat for the people already inside. If you don't write it down, every new member asks the same question, and you answer the same thing, one by one, forever.
someone who just joined can't see messages from before they joined, unless someone sends them the history, so without a text explaining the group, everyone improvises what they think is okay to write
The four things it has to say
The pinned message isn't a ten-point rulebook nobody's going to read all the way through. It's four lines, and if you write a fifth you're already taking space away from the ones that matter. Each line answers a question that, if you don't answer it up there, someone's going to ask you by DM at the worst moment of the day.
- 1The goal, in one sentence
The first line says what the group is for, using the same sentence you settled on in the lesson One Group, One Reason to Exist. Nothing like "hair salon customer group," that's a name, not a goal. Write something like "I post last-minute canceled appointments here, nothing else gets handled in this chat." - 2What can be posted and what can't
The second line sets the boundary you defined in What Can Be Said and What Can't, in writing: who posts, just you or them too, and about what. If only you post, say so plainly: "Only I post here, you all just read." That one sentence alone heads off a lot of out-of-place messages. - 3When you reply
The third line heads off the ten p.m. question: state the window when you check the group, say nine to eight, and what to do outside that window if it's urgent, a separate phone number or the appointment that's already booked. - 4How to leave
The fourth line takes the awkwardness out of leaving: "You can leave anytime, no hard feelings, and if you need me again just message me privately." A group that's hard to leave is a group people abandon quietly, without you ever finding out you've lost that customer.
Where to put it so people actually read it
Writing the message and letting it get lost in the chat is like putting the sign on the floor of the storeroom. Put it in two places. The first is the group description: in the group info, tap the pencil next to the description and paste in the four lines. That's what anyone sees when they join, whenever they join, and in the group permissions it's worth limiting editing to just you, since by default any member can change it. The second is a message pinned at the top of the chat: press and hold the message, choose pin, and pick how long it stays, 24 hours, 7 days, or 30 days at most. There are two limits worth knowing: anyone who joins after you pinned it won't see it, unless you send them the chat history when you add them, and once it expires you have to pin it again. And a message can only be edited in the 15 minutes after you send it: to change it later, you write a new one, pin it, and update the description too.
Before adding anyone, ask them privately if they want in: in a group everyone can see everyone else's phone number, WhatsApp doesn't let you hide it, and a customer's number is personal information you can't show to others without their permission. The cleanest way is to send them the invite link and let them join if they want. End that message with a line like: "the goal and the rules are in the group description, take a look when you join." That way nobody shows up blind, and anyone who joins through a link someone else passed along also has it right there in the description.
A group with these four lines well written and well placed explains itself. The owner stops answering the same question six times a week, and a new member knows in ten seconds whether this is for them. One thing's still left to figure out, and it's not about writing but about checking in on the group now and then: the sign that it's stopped serving the purpose you set for it.
- The welcome message written with the four lines: purpose, what gets posted, when you reply, how to leave
- The four lines in the group description and pinned at the top of the chat, not just sent once
- The line pointing to the description, added to the message where you ask each customer if they want to join
- A reminder set to review it the day the schedule or the group's goal changes, and to pin it again once it expires
Test yourself
Answer before opening each one. If one gives you trouble, go back to the section that explains it.
1. A new customer joins the group and ten minutes later asks if they can forward the offer to a group of their friends.
The answer is no, and it's decided by the pinned message, not in the moment: the second line has to say who posts and about what, and whether that includes forwarding things outside the group or not. Answering it one by one every time it happens is the sign that line is missing or isn't clear enough, so it's time to rewrite it or make it stand out at the top.
2. You've had the group for six months and changed the hours you check your phone, from nine to eight to ten to six in the evening. Nobody knows, and someone messages you at seven expecting a reply.
The decision is to update the group description and the pinned message that same day, not to count on remembering it yourself or on members guessing it. The schedule is part of the four required lines, so a schedule change is a text change: you update the description, write the new message, and pin it in place of the old one.
3. A coworker of yours added a customer to the group without asking first if they wanted to join, and that person is now asking in the group what this is.
Two things get decided. The group description has to stand on its own, because it's the only thing that customer sees when they join: the message you pinned before they arrived doesn't show up for them. If the answer to "what is this" isn't fully there, the goal in the first line isn't written clearly enough, and it needs to be rewritten with someone with zero context in mind. And in the group permissions, limit adding people to just you, so no one joins without having said yes first.
Those four lines hold up for the first few months. But even with a clear goal and the rules in plain sight, the day comes when the group fills up with noise anyway, and that's when you need to know how to read the sign that it's time to close it or split it in two.
NextThe sign that this group isn't working anymore