---
title: "Extending"
manual: "Event management and registration"
version: "8.6"
permalink: "https://docs.typo3.org/permalink/derhansen/sf_event_mgt:extending@8.6"
source: "ForDevelopers/Extending/Index.rst"
rendered: "2026-09-26T09:22:10+00:00"
---

# Extending {#extending}

A demo extension with a short step by step manual is available on
GitHub [https://github.com/derhansen/sf_event_mgt_extend_demo](https://github.com/derhansen/sf_event_mgt_extend_demo)

## Extending FlexForm setting "settings.orderField" {#extending-flexform-setting-settings-orderfield}

If you need to add a new option to the FlexForm setting "settings.orderField", please read this
blogpost [How to extend existing FlexForm select options of a TYPO3 plugin using Page TSconfig](https://www.derhansen.de/2020/11/typo3-extend-existing-flexform-select-options.html)
which shows this task as an example.