Hello @Niclas.
My name is Yann from Mews support and I'm happy to add some information here :)
You’ve hit a real product limitation here rather than “just missing a button”.
1. What’s actually going on
When a POS or integration sends several of the same item (e.g. 3× grape juice), Mews can store that in two ways:
On the billing screen you can only move whole order items between bills/guests. You can’t take a single line with quantity 3 and tell Mews “split this into three separate items and move one to each room”. That kind of splitting doesn’t exist today – internally we treat it as a known limitation, and teach workarounds in the Billing workshop rather than a native feature.
Whether POS items end up merged or separate depends on how the service that receives those POS charges is configured:
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Has expanded bill items = ON and Bill as package = OFF → you see each POS item as its own line.
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Has expanded bill items = OFF and Bill as package = ON → items are grouped into a packaged line per service/order.
Support confirmed in the “Merge POS items on the bill” case that this is a per‑service behaviour. There is no per‑bill toggle after the items have been posted: once 3 juices are on one merged POS line, there’s no built‑in “split across rooms” button – you’re left with configuration changes for the future or manual corrections for that stay.
2. How to avoid the problem next time (before posting)
If you know you’ll often need to split restaurant spend between rooms/guests, it’s much easier to change how items are posted into Mews than to fix it at check‑out.
a) Configure a “detailed” POS service
For the additional service that receives POS room charges, set it up as your detailed F&B service:
That way every POS item is its own line on the bill, and front office can simply move one juice to Guest A, one to Guest B, one to Guest C by moving items between bills.
If you sometimes also need merged lines (e.g. for groups/events), the pattern that works best is:
Then:
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Configure the POS/integration so that normal individual checks post to Service A, and
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Group / event checks post to Service B.
If the POS can’t route to different Mews services, the only alternative is to temporarily flip the options on the service itself – but that will affect all POS postings during that time and still won’t give you a one‑off toggle on a single bill.
b) Use split checks / separate orders in the POS
From an operational point of view, if the team already knows that guests want to pay separately:
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Open separate checks or orders per guest in the POS and post each check to the right room/profile, or
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Use the POS’ own “split by seat/guest” function before you post to Mews.
Then Mews receives already‑split charges instead of a single “3× grape juice” line, and each person’s consumption sits on their own bill ready to be moved or invoiced independently.
3. What you can still do “after the fact”
If the POS has already posted everything as one merged line on a single bill, there is, unfortunately, no one‑click fix. The only options are manual billing corrections, similar to the “Split item” and “Edit closed bill items” examples in the Billing workshop.
How you handle it depends on whether the bill is still open or already closed.
Case A: Bill still open (no receipt/invoice yet)
Example: you have one line “3× Grape juice – 27.00 EUR”, but it should really be 1 juice per room.
Option 1 – adjust quantity + add manual items
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On the original bill, edit the POS item (if allowed) and change the quantity from 3 to 1 (or adjust the total amount to match 1 juice).
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On the other two guests’ bills, add manual products (e.g. a custom “Grape juice” product) for the correct price and move them to the right profiles.
End result: 3 separate items correctly distributed. Two of them are manual products instead of the original POS item, but the accounting still adds up and each guest has their own line.
Option 2 – remove and recreate
This is more work but gives you a completely clean split and avoids mixing POS and manual lines.
Both of these approaches are essentially doing by hand what the system can’t do automatically: you’re manually “splitting” the item, similar to how we split a single Champagne into two half‑Champagne items in the workshop.
Case B: Bill already closed (receipt or invoice issued)
If a receipt or invoice is already out, you move into correction flows:
Because this generates extra documents, it’s usually only worth doing when the guest really needs separate invoices with their own name/room, or where there’s a legal/accounting requirement.
4. Why breakfast behaves differently from POS
Your comparison with breakfast is spot on.
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For bookable services (stays), nights and daily products like breakfast are created as separate order items per day/per person. That means you already see one item per night / per breakfast, so you can easily move a single night or breakfast to a different guest or company.
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For POS, things work differently. The combination of:
decides whether you get:
Once items are merged into a single POS line, Mews has no native concept of “split this quantity across guests” – hence all the manual workarounds above.
I hope this will be helpful.
Wishing you all a great year!
Yann
