# Element Selection by Category and Type

Area on the left side of Class Feeder dialogue enables users to select entities by their category and type according to Revit default categories. Selection of individual types of entities is also possible.

After selecting categories or types, all instances of selected types are displayed in the lower part of selection area. Individual instances can be selected. To classify selected instances, pick the right code from the classification table and click *Classify* button.

<figure><img src="/files/EPVwGBl9yB3t4yXmvEGU" alt=""><figcaption><p>Element selection by category and type</p></figcaption></figure>

{% hint style="info" %}
Right clicking the area of category and opens context menu containing additional selection options.
{% endhint %}


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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://help.arkance-systems.com/class-feeder/eng/manual/element-classification/element-selection-by-category.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.