The customer's name and number, on the bill.

• The bill gets one row under its header: the name on the left, the number on the right, written in full. A customer saved with only a name or only a number gets a row that starts with Customer. The on-screen receipt shows the same row as the paper.
• A parcel's KOT prints the name in bold under the KOT number (For Neha Kapoor), because a bag has no table to be found by. A dine-in KOT never prints the customer, and no KOT ever prints the number.
• Reprints follow corrections. An order remembers which customer it belongs to, not a copy of their details, so a typo fixed today is fixed on every past bill and every reprint of it.

The receipt preview: the customer row sits between the header and the dishes, laid out like the money rows.

Open Orders from the register's top bar. The search box says what it covers ("Search table, bill, dish, amount, or a customer's name or number"): type part of a name, or four digits from anywhere in the number, and the list narrows to the bills that match. Each row shows the customer's name under the order type. For a bill from another day, switch to Earlier and pick the date first.

The last four digits of her number, and there is her bill.

Open a settled bill and its customer sits in a box of their own, with two buttons. Edit contact fixes the name or number, on this bill and on every other bill that customer is on. Change customer puts somebody else on this one bill. A settled bill with nobody on it offers Add customer instead. None of the three touches the amount, the payment or the invoice number. Edit contact will not move a number onto one that already belongs to another customer; it names that customer and offers to attach them to the bill instead.

On a settled bill: fix the contact, or change who it was for.

On the captain app, the person icon sits next to ‹ Floor at the top of the order screen. It opens the same search, with the same rules: digits find the number, letters find the name, and Add new customer saves someone with either one. Once attached, the name shows as a pill with an ×; to put someone else on the order, take the first one off with the × and tap the icon again.

The phone's settle sheet has Customer · optional with a Name and a Number box, and the number box brings up the phone keypad. A short number is flagged before you settle ("Enter a 10-digit mobile number") and Cash and UPI stay greyed until it is finished or cleared; a good one is saved and attached when you settle. With a customer already on the check, the sheet shows their name and number instead of the boxes.

In the owner dashboard, Manage → Customers lists everyone your cashiers and captains have saved: the name, the number, how many visits, the last visit and what they have spent. Visits and spend count settled bills only. The search box takes a name or a number.

Regulars at the top, with the numbers that make them regulars.

Click a customer to see their orders, with Edit contact and Delete customer above them. Editing onto a number that someone else already has is refused, and the page names who has it with a link to open them. Deleting asks once more, then takes the name and number off every past bill; the orders and their money stay. The page itself says when to use it: "If a diner asks to be forgotten, open them and delete."

One number, one customer: the dashboard will not make a second.

The customer book lives on each register and phone, like the menu does, so searching, saving, attaching and printing never wait for the internet. When the line comes back, new customers sync with the orders. When your tills and captain phones are connected over the shop's Wi-Fi, customers travel between them with the orders, internet or not, so a name saved on a waiter's phone prints on the counter's bill. How that connection works is in the second till guide and the offline billing guide.

• No messages to the guest. EasyKOT does not send a WhatsApp, an SMS or an e-bill. The number is saved so that you can call, and nothing is sent to it.
• No address. There is no address field, and no birthday, note or loyalty points either. The GST rules ask for a guest's name and address on the bill only when they are GST-registered or the bill is ₹50,000 or more (the GST bill post explains); EasyKOT cannot print an address on those bills.
• One outlet, one list. Customers belong to the restaurant that saved them. Each EasyKOT restaurant keeps its own list, so a regular at two of your outlets is saved once at each.
• On the phone, change means remove and re-pick. The captain's settle sheet has no Change button, and a phone cannot change the customer on a bill once it is settled. Fix those from the register's Orders list.
• Older part payments stay where they were. Names and numbers typed for a part payment before customers arrived were not copied into the customer list.