Hi and welcome! 👋 It's great that you're exploring Odoo for your drinks retail business — it sounds like your delivery workflow can definitely be modeled with some of Odoo's built-in tools (plus a bit of customization where needed).

Based on your workflow, here's how you could approach this:

🔁 1. Assign Delivery Regions and Days to Customers

You can add a custom field (via Odoo Studio or a developer module) on the customer/contact form to store:

• Delivery Region (e.g., Region A, B, C)
• Delivery Day (e.g., Monday, Tuesday…)

These fields can be manually assigned or automatically calculated based on the delivery address using a mapping or a small automation rule (e.g., via server actions or automated actions in Studio).

🧾 2. Show Delivery Day in Sales Orders (and allow manual override)

On the Sales Order form, add a related field that pulls the delivery day from the customer. You can make it editable so your team can override it for special cases.

• You can use Odoo Studio to:
  • Add a field like Delivery Day
  • Set its default value from the customer’s delivery preferences
  • Allow manual override

🧠 3. Orders Go to Planning Before Warehouse

To make orders land in your planning department first, before they go to the warehouse:

• Use a custom state or tag (e.g., “Ready for Planning”) in the sales order or delivery order workflow.
• Orders with future delivery days can stay in this state.
• The planning team can review all orders for a specific delivery day (using filters or custom dashboards), optimize the route, and then confirm them.

You might also look into Delivery Routes in Inventory > Configuration, and customize the delivery workflow accordingly.

🚚 4. Plan Delivery Routes and Picking Order

For actual route planning, you might:

• Use Odoo's Delivery Orders and group them by delivery day/region.
• Use a third-party route optimization app from the Odoo App Store (some offer Google Maps integration and delivery sequence optimization).
• Once a route is confirmed, you can use Picking Waves or batch picking features in Inventory to generate picking lists in delivery order.

You can also add a field like Delivery Sequence on each order line or delivery order to control the exact order of picking.

Summary Workflow

1. Customer has delivery region + day on record.
2. Sales order auto-fills delivery day (can be overridden).
3. Orders are filtered/grouped by delivery day for planning.
4. Planning team sets delivery route & picking order.
5. Orders move to warehouse for picking in the optimized sequence.

If you’re open to a bit of development, this workflow can be made really smooth. If you prefer to stay within standard features + Odoo Studio, it’s also doable with some creativity.

Let me know if you'd like some example screenshots or module ideas to support this!

thank you so much for your reply. i will look into it

Odoo have what they call Dispatch management. Function to plan distribution routes from deliveries.  

https://www.odoo.com/documentation/18.0/applications/inventory_and_mrp/inventory/shipping_receiving/setup_configuration/dispatch.html

But it is not fully what you need, as you cannot define a route on the customer and set related delivery date on the sales order.   But it give you functions to group pickings into routes. 

I would have asked an Odoo partner if they can develop on top of this.  The logic you need is not very complex.