# Queue trigger

> Start a workflow each time a work item is added to a queue.

The **Queue trigger** starts a workflow when a work item is added to a queue. A queue holds work items that one automation adds and another picks up, so this trigger lets a workflow pick up work that robots, other workflows, or other apps put there.

## Set it up

1. Select the trigger on the canvas, then select **Queue trigger** in the **Change trigger** list.
2. In **Queue**, select the queue to watch.
3. Optionally, under **Input arguments**, select **Add input argument** for values that other nodes read under `$vars.<node ID>.output`, for example `$vars.queueTrigger1.output`.

Each queue can start only one workflow. [Queue triggers](/orchestrator/automation-cloud/latest/user-guide/queue-triggers) describes how queue triggers work.

## Next steps

- [Queue tools](node-queue-tools.md): add work items to a queue from a workflow.
- [Triggers](triggers.md): the other ways to start a workflow.