# Create Subtopics *Subtopics* allow you to save a specific *Topic* + *filter* combination for easy access: \ on the homepage, when creating a report, setting up an alert, or within a Smartboard. Thanks to *Subtopics*, you can create an initial large *Topic*, and then refine it further. \ You can even create multiple levels of Subtopic to organize your monitoring however you wish.

## Create a Subtopic Once satisfied with your applied filter, click on the "floppy disk" icon and "*Save as new Subtopic*" to create a new *Subtopic.*

Name your **Subtopic** and validate :

## Modify a *Subtopic* To modify a *Subtopic*, click on Edit on your Homepage or on your Explore Page :

## Overwrite a Subtopic To overwrite a Subtopic click on Reveal Subtopic Filter :

Once you're satisfied with your updated filter, you can choose to save it as a new Subtopic or overwrite a pre-existing one :

## Add to a pre-existing Subtopic You can add new filtering options to a pre-existing and applied filter, this is particularly useful when adding exclusions to your Subtopic.

Use the "*Add to current Subtopic*" option. ## Delete a Subtopic Click on Delete on your Homepage or on your Explore page :

--- # 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.visibrain.com/platform-guide/filters-subtopics-and-filter-library/create-subtopics.md?ask= ``` 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.