Voodoo RoboticsWarehouseWorkflow Lab
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Step-by-step workflow guide

Pick several orders on one cart

Pick several orders in one trip and place each item directly into its order bin on a cart.

Implementation effort: Moderate · Reviewed July 2026Not sure about a term? Open the plain-English glossary
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What this fixes

Cluster carts seek batch travel savings without creating a separate sort, but cart ergonomics and order control become critical.

Works well whenSmall- to medium-cube orders
Usually a poor fit whenOversized items
Example

A cart holds eight orders. At each location, the worker puts each unit into the correct lit tote.

01 · When to use it

When this method works well—and when it does not

Works well when

  • Small- to medium-cube orders
  • 4–20 concurrent orders
  • Each picking
  • Flexible routes and seasonal reconfiguration
  • Operations without room for a large put wall

Usually a poor fit when

  • Oversized items
  • Very high order lines per order
  • Order containers that cannot fit safely on the cart
  • Narrow or congested aisles with unsuitable carts
02 · Before and after

Show exactly what happens at each step

Write down actions that someone can see or confirm: what the worker does, what moves, who owns the next step, and what happens if something goes wrong.

Before: common problem process
  1. 1Pick one order
  2. 2Repeat aisle
  3. 3Return to pack
After: better-controlled process
  1. 1Load order positions
  2. 2Pick common route
  3. 3Put to order position
  4. 4Release completed carts
03 · Basics to fix first

Get these basics right before adding technology

  • One named person owns the process, and everyone agrees what one task includes
  • Current time, accuracy, problem, and volume numbers collected using written rules
  • One named person corrects product and location information
  • A written backup method and a clear path for getting help
Fix this first

If workers cannot reliably identify the item, order, or location, correct that problem before expecting new guidance equipment to improve accuracy.

04 · How to run it

Step-by-step procedure

  1. 01

    Size positions by realistic order size

  2. 02

    Identify every cart and order position

  3. 03

    Sequence the route with cart access in mind

  4. 04

    Confirm product and destination where risk justifies it

  5. 05

    Control cart exchange and incomplete-order handling

Information the process must track

For each task, decide what item or order is being worked, where it comes from, where it goes, how much is expected, how the worker confirms completion, what happens when something goes wrong, and which system records the final result.

Technical notes for the warehouse software or IT team

Use one unique task ID. Re-sending the same message should not create a duplicate move or pick. Keep a way to compare records and repair differences when messages are delayed, repeated, or missed.

05 · When things go wrong

Decide what workers should do when something goes wrong

What the worker seesWhat the worker should do
Workers put into adjacent positions

Increase visual differentiation, confirmation, or physical separation.

Carts wait for one missing item

Create incomplete-order problem and release rules.

Batch size is routinely reduced

Find the real constraint: cube, weight, aisle access, or control burden.

06 · Measurement

Numbers to watch

Orders/cartLines/cart-hourTravel/orderItem put into the wrong order position rateIncomplete cart wait timeCart exchange time

Before the test starts, write down what is counted, what it is divided by, when the clock starts and stops, what is excluded, and where the data comes from. Keep those rules the same through the test.

07 · Small trial

Test it on a small scale before a full rollout

Trial steps

  1. Choose one realistic area, shift, and order mix
  2. Watch the current method long enough to include normal work and a busy period
  3. Test the new method using exactly the same measurement rules
  4. Review every problem and worker workaround before expanding the change

What must be true before rollout

  • The target output is maintained for one full, realistic shift
  • Accuracy and problem recovery meet the written target
  • New workers can follow the process without unwritten tips from experienced workers
  • The backup method works, and the team can return cleanly to the normal process
Clear product disclosureWhere Voodoo may fit

Voodoo is one possible way to guide the work—not the answer to every problem.

Where it may help

Wireless displays on cart positions can show order, quantity, color, barcode, or direction and confirm each put.

See how Voodoo works

When to choose something else

If cart positions are obvious and error exposure is low, fixed labels plus scanning may be simpler.

Read how recommendations are made
08 · Calculators

Use these calculators to check the numbers

Cart vs batch-sort vs put wallCompare multi-order carts, batch-and-sort picking, and zone picking with a put wall.Put-wall & sorting-station sizerEstimate how many order cubbies and sorting workstations are needed.Travel & search-time estimatorSee how order time is divided among walking, searching, scanning, picking, and handling.