# Would it be possible to add to ability to create "Singles" and "Global variables"?

singles, effectively documents that only have one instance. This would be a great addition!

##### Post Metadata
- Posted at: about 4 years ago
- Author title: Web developper
- Net upvotes: 1


## Comments
### Comment 1

Hi! This is actually possible today using the Structure Builder API. You can follow this tutorial to set it up: https://www.sanity.io/docs/create-a-link-to-a-single-edit-page-in-your-main-document-type-list

The reason we have gone with this approach is that in many cases you want more instances of your “singleton documents”  once a project matures and grows. For example, you have a “settings document” for a website, but then you want to add a second website property to your Sanity project. Then you can opt out of the singleton configuration and support multiple settings documents with the same fields. 

##### Comment Metadata
- Posted at: about 4 years ago
- Author title: Head of Developer Relations at Sanity.io




## Related Product
[Sanity](https://www.g2.com/products/sanity/reviews)

## Related Category
[Headless CMS](https://www.g2.com/categories/headless-cms)

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