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

# How To: Set up a 'none of the above' option

> Add an option button that deselects all other options

Many multi-select questions require a `None of the above` button.

This button should behave differently from the other options - it should not only be selected when clicked, but should also deselect all other options.

Fortunately, there's an easy way to add this functionality in Embeddables.

<Warning>
  This feature is not yet implemented in the Builder UI. For now, you will need
  to add `single_select: true` to the button in the component JSON.
</Warning>

<Steps>
  <Step title="Select the component and open the button settings">
    * Select the Option Selector component.
    * Navigate to the Options sidebar.
    * Click the <Icon icon="pencil" iconType="solid" /> Edit icon button next to the "None of the above" button.
  </Step>

  <Step title="Set the button to be a 'single select' option">
    * Check the option called "Single select".
    * This makes the button single-select only, meaning that once it's selected, all of the other buttons are deselected.
  </Step>
</Steps>