> For the complete documentation index, see [llms.txt](https://docs.datumo.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.datumo.com/documentation/documentation-en/evaluation/how-to-use/2.-task-management.md).
# 2. Task management
## What is a Task?
A Task is a unit that defines 'what to evaluate'; it represents the capability to be evaluated and consists of multiple Metrics and one Benchmark Set.
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## Create Task
You can create a Task, either by choosing from templates or by creating an empty Task.
`+New Task` Select it.
### 1. When adding with a template
If you select the desired template `Add Task` the button becomes enabled.
### 2. When adding a custom Task
`Custom Task` Select it.
`Task Name` and `Description`Enter the Task Name and Description to add it.
Go to Task Detail.
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## Task Management
### 1. Task screen layout
A Task is largely composed of the following areas.
* **Task basic information area**\
This is the area where you can view basic Task information such as the Task name, Description, and Task Group.
* **Schema Setting area**\
This is the area where you can view and edit the Schema information owned by the Task.
* **Metric information area**\
This is a concept associated with the Task. It displays the Metric information the Task has.
* **Benchmark Set area**\
This is the area where you can view the Benchmark Set (= a collection of multiple datasets) used for Task evaluation.
### 2. Key information management
The Key information used in a Task is broadly divided into four types: Input, Output, Reference, and Metadata. Each Key type plays a different role in the evaluation execution, Metric configuration, and Eval Result generation process.
To edit the Input Key and Output Key `Go to Application Setting` click the button. `Go to Application Setting`Press it to move to the Application Setting screen and edit.
If you want to edit Reference or Metadata, each `Edit` click the button.
#### Edit Reference
`+Add Key`You can add a Key by clicking it.
`-` Clicking the button deletes the corresponding Key.
`Edit` Clicking the button lets you edit the Key name.
After finishing editing the Key name `Save` select the button.
While editing `Complete` the button is disabled.
When adding a Key value, you must enter at least one character for the Save button to become enabled.
Enter the Key name `Save` and then `Complete`select it to add a new Key.
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### 🔗 Related documents
* E-1. Creating and managing Criteria — How to configure Criteria, Subgroup, and Task
* E-3. Managing Benchmark Sets — How to upload Benchmark Sets and generate AI-based data
* E-4. Adding and managing Metrics — How to create Metrics, map Keys, and set up Preview
* E-5. Run Eval — How to run an evaluation Run and check history
* E-6. Eval Result — How to check evaluation results and manage Errors and Retries
* E-7. Dashboard — How to visualize and analyze evaluation results