---
layout: '@/layouts/DocsLayout.astro'
source: pirform
description: Learn how to format the automatically generated certificate numbers using Shine Forms.
---


You can adjust the way Shine Forms generates numbers for new certificates from inside **Numbering** section of [Shine Forms Options](https://www.shineforms.co.uk/docs/options).

![Screenshot of the Shine Forms Options page, highlighting the Numbering section.](https://www.shineforms.co.uk/docs/_img/options-numbering.png)

This allows you to adjust sections of the generated certificate number such as:

- The prefix.
- The format of the date section.
- The separator character used.
- The length of the number (e.g. "0001" would be 4, "001" would be 3, etc.) .
- The last number used for each certificate type.

For the number, you can choose to use the same number for each certificate type (which is the default setting) or specify a number for each type.

### Updating the last certificate number

Enter the last used certificate number in the box at the top of the dialog.  Then click **Update All** to adjust the numbers accordingly.

![Screenshot of the Numbering Adjust dialog, showing where to update the last used certificate number.](https://www.shineforms.co.uk/docs/_img/options-numbering-adjust.png)