> ## 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 in Advanced Designer > Choose and configure the activities that make up a document processing flow in Advanced Designer (classification, extraction, NLP, and customization). The **Activities** tab in Advanced Designer is where you build a document processing flow. Each activity is a step in the flow that performs a specific action, such as classifying documents, extracting fields, parsing addresses, splitting pages, or running custom logic. For end-to-end examples, see [Advanced Designer use cases](/vantage/documentation/advanced-designer/use-cases/use-cases). ## Edit skills created in Vantage When you open a skill created in Vantage, the **Activities** tab shows a flow with a single Fast Learning activity that extracts fields using Vantage machine learning. To extend the skill, add new activities for the fields you want to handle differently. ## Create skills in Advanced Designer When you build a skill in Advanced Designer, drop activities into the flow between **Start** and **Finish**. They run in the order you place them. To branch the flow on a condition, use the IF activity. To fork on a field value, create a workflow item with several Extraction Rules activities and map them to the values of that field. ## Choose an activity | Use case | Activities | | :------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Route documents by layout or content | [Classify By Text and Image](/vantage/documentation/advanced-designer/activities/classify-by-text-and-image), [Classify By Company](/vantage/documentation/advanced-designer/activities/classify-by-company) | | Extract from semi-structured documents | [Fast Learning](/vantage/documentation/advanced-designer/activities/fast-learning), [Deep Learning](/vantage/documentation/advanced-designer/activities/deep-learning-semi-structured), [Hypothesis Filtering](/vantage/documentation/advanced-designer/activities/hypothesis-filtering), [Extraction Rules](/vantage/documentation/advanced-designer/activities/extraction-rules) | | Extract from structured forms | [Forms](/vantage/documentation/advanced-designer/activities/forms) | | Extract from text (NLP) | [Prompt-based](/vantage/documentation/skills/prompt-extraction), [Segmentation](/vantage/documentation/advanced-designer/activities/segmentation), [Deep Learning for NLP](/vantage/documentation/advanced-designer/activities/deep-learning-nlp), [Named Entities (NER)](/vantage/documentation/advanced-designer/activities/ner), [Address Parsing](/vantage/documentation/advanced-designer/activities/address-parsing), [Extraction Rules for NLP](/vantage/documentation/advanced-designer/activities/nlp-extraction-rules/extraction-rules) | | Add custom logic or branching | [Script](/vantage/documentation/advanced-designer/activities/nlp-extraction-rules/script-activity), [IF](/vantage/documentation/advanced-designer/activities/nlp-extraction-rules/if-activity) | | Build a Document Splitter skill | [Splitter Script](/vantage/documentation/advanced-designer/activities/splitter-script) | A document processing flow can contain only one [Fast Learning](/vantage/documentation/advanced-designer/activities/fast-learning) activity. Other activity types can be used multiple times. NLP activities support Dutch, English, French, German, Italian, Japanese, Portuguese (Standard), Russian, and Spanish. ## Related topics * [Advanced Designer use cases](/vantage/documentation/advanced-designer/use-cases/use-cases) * [Advanced Designer tutorial](/vantage/documentation/advanced-designer/tutorial/tutorial) * [Document skills in Advanced Designer](/vantage/documentation/advanced-designer/document-skills/document-skills) * [LLMs in ABBYY Vantage](/vantage/documentation/llms/llms)