Label Studio can control the distribution of tasks across annotators. This is enabled in the project settings under Annotation > Distribute Labeling Tasks.
Auto distribution mode doesn’t guarantee that all tasks will get exactly the specified amount of annotations - there are many scenarios where users can assign more annotations per task:
- Users with higher privileges than Annotator role can manually create extra annotations.
- When Manual mode is activated - no annotations limits are applied.
- When an Annotator leaves their task in “Draft” mode (edited, not submitted), they can revert back to the task and complete it. It doesn’t guarantee that the same task wasn’t returned back in the labeling queue and labeled by other project members.
For more information, see Set up task distribution for labeling.