# Prerequisites

If a learning path contains several elements, it is possible to establish the completion of tasks and targets expected of learners following the learning path using the *prerequisites* feature.

Click on the *prerequisites* button ![](/files/-LH9DFngEg_p7BkJy2E0) next to any element in the path (or ![](/files/WttJkf5vzo3otXWGgpRT) in edit view):

![](/files/-LH9CwkbQYXvSYFcWewQ)

*Illustration: Learning paths – Prerequisites*

This allows the teacher to require the learner to have completed another task in the learning path (e.g. the preceding task) before they can access this element, and also, e.g. in the case of a test or assessment, to have achieved a given minimum score.

Using the *prerequisite options* button in the toolbar, prerequisites to complete the preceding step can be set globally for all steps in the path, or alternatively all prerequisites can be cleared from the path.

![](/files/-LH9Cwkfk9wr7gCNdv-n)

*Illustration: Learning paths – Prerequisites options*


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.chamilo.org/1.11.x/teacher-guide/structure_learning_paths/prerequisites.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
