diff --git a/ext.php b/ext.php
new file mode 100644
index 0000000..37fce91
--- /dev/null
+++ b/ext.php
@@ -0,0 +1,62 @@
+<?php
+/**
+ *
+ * Group Switches extension for the phpBB Forum Software package
+ *
+ * @author RMcGirr83 (Rich McGirr) rmcgirr83@phpbbmodders.net
+ * @copyright (c) 2015 phpbbmodders.net
+ * @copyright (c) 2026, phpBB Modders, https://www.phpbbmodders.com/
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ */
+
+namespace phpbbmodders\groupswitches;
+
+/**
+ * Group Switches extension base
+ */
+class ext extends \phpbb\extension\base
+{
+	/**
+	 * Check whether the extension can be enabled.
+	 * The current phpBB version should meet or exceed
+	 * the minimum version required by this extension.
+	 *
+	 * @return bool|array
+	 * @access public
+	 */
+	public function is_enableable()
+	{
+		$enableable = $this->check_phpbb_version() && $this->check_php_version();
+
+		if (!$enableable)
+		{
+			$language = $this->container->get('language');
+			$language->add_lang('install_groupswitches', 'phpbbmodders/groupswitches');
+
+			return $language->lang('GROUPSWITCHES_NOT_ENABLEABLE');
+		}
+
+		return $enableable;
+	}
+
+	/**
+	 * Require phpBB 3.3.19
+	 *
+	 * @return bool
+	 */
+	public function check_phpbb_version()
+	{
+		return phpbb_version_compare(PHPBB_VERSION, '3.3.19', '>=');
+	}
+
+	/**
+	 * Require PHP 7.4
+	 *
+	 * @return bool
+	 */
+	public function check_php_version()
+	{
+		return PHP_VERSION_ID >= 70400;
+	}
+}
diff --git a/language/en/install_groupswitches.php b/language/en/install_groupswitches.php
new file mode 100644
index 0000000..1d86f76
--- /dev/null
+++ b/language/en/install_groupswitches.php
@@ -0,0 +1,44 @@
+<?php
+/**
+ *
+ * Group Switches extension for the phpBB Forum Software package
+ *
+ * @author RMcGirr83 (Rich McGirr) rmcgirr83@phpbbmodders.net
+ * @copyright (c) 2015 phpbbmodders.net
+ * @copyright (c) 2026, phpBB Modders, https://www.phpbbmodders.com/
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ */
+
+/**
+ * DO NOT CHANGE
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+// DEVELOPERS PLEASE NOTE
+//
+// All language files should use UTF-8 as their encoding and the files must not contain a BOM.
+//
+// Placeholders can now contain order information, e.g. instead of
+// 'Page %s of %s' you can (and should) write 'Page %1$s of %2$s', this allows
+// translators to re-order the output of data while ensuring it remains correct
+//
+// You do not need this where single placeholders are used, e.g. 'Message %d' is fine
+// equally where a string contains only two placeholders which are used to wrap text
+// in a url you again do not need to specify an order e.g., 'Click %sHERE%s' is fine
+//
+// Some characters you may want to copy&paste:
+// ’ » “ ” …
+//
+
+$lang = array_merge($lang, [
+	'GROUPSWITCHES_NOT_ENABLEABLE'	=> 'Group Switches could not be enabled. The minimum requirements of phpBB 3.3.19 and/or PHP 7.4.0 were not satisfied.',
+]);