> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Activities tab

> Set up document processing flows by adding and configuring activities for your Document skills in Advanced Designer.

On the **Activities** tab, you build the document processing flow for a Document skill — adding activities and linking them to set the order in which operations run.

An activity is a document processing step that performs a specific action contributing to extraction of a skill's fields. Which activities you use depends on the documents being processed. For worked scenarios, see [Use cases](/vantage/documentation/advanced-designer/use-cases/use-cases).

## Edit skills created in Vantage

If you are editing a skill created in Vantage, the **Activities** tab displays a processing flow consisting of the Fast Learning activity, which extracts a skill's fields using Vantage machine learning. Add new activities to the flow as needed for the changes you're making.

## Create skills in Advanced Designer

If you are creating a skill in Advanced Designer, add activities to the flow by placing them between **Start** and **Finish**. Activities run in the order they appear in the flow. The IF activity can be used to specify conditions for branches in the flow. You can also implicitly fork the processing flow by creating a workflow item that contains several Extraction Rules activities and mapping these activities to the values of some field.

## Available activities

You can add the following activities to your Document skill processing flow:

* [Classify activities](/vantage/documentation/advanced-designer/activities/activities#choose-an-activity)
* [Semi-structured extraction activities](/vantage/documentation/advanced-designer/activities/activities#choose-an-activity)
* [NLP activities for unstructured documents](/vantage/documentation/advanced-designer/activities/activities#choose-an-activity)
* [Customize activities](/vantage/documentation/advanced-designer/activities/activities#choose-an-activity)

<Note>
  A processing flow can contain only one Fast Learning activity. Other activity types can appear multiple times.
</Note>

## Related topics

<CardGroup cols={3}>
  <Card title="Activities reference" icon="diagram-project" href="/vantage/documentation/advanced-designer/activities/activities">
    Full list of available activities and their settings.
  </Card>

  <Card title="Use cases" icon="lightbulb" href="/vantage/documentation/advanced-designer/use-cases/use-cases">
    Worked scenarios for common document types.
  </Card>

  <Card title="Fields tab" icon="list" href="/vantage/documentation/advanced-designer/document-skills/fields">
    Create skill fields and label documents.
  </Card>
</CardGroup>