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# Function management

## Docs

- [Create a function from scratch](https://zuora.ferndocs.com/docs/platform/extensibility/custom-logic/function/function-management/create-a-function-from-scratch.md): Learn how to create a function from scratch.
- [Create a function from templates](https://zuora.ferndocs.com/docs/platform/extensibility/custom-logic/function/function-management/create-a-function-from-templates.md): Learn how to create a function from built-in templates.
- [Update a function](https://zuora.ferndocs.com/docs/platform/extensibility/custom-logic/function/function-management/update-a-function.md): Learn how to update a function.
- [Activate a function](https://zuora.ferndocs.com/docs/platform/extensibility/custom-logic/function/function-management/activate-a-function.md): Learn how to activate a function that is in the Draft or Inactive status.
- [Delete a function](https://zuora.ferndocs.com/docs/platform/extensibility/custom-logic/function/function-management/delete-a-function.md): Learn how to delete a function.
- [Test a function](https://zuora.ferndocs.com/docs/platform/extensibility/custom-logic/function/function-management/test-a-function.md): Learn how to test a function when creating or updating it.