diff --git a/phpBB/adm/style/acp_groups.html b/phpBB/adm/style/acp_groups.html
index 8eec3b63c6..8651b63b7f 100644
--- a/phpBB/adm/style/acp_groups.html
+++ b/phpBB/adm/style/acp_groups.html
@@ -36,10 +36,12 @@
 		<dl>
 			<dt><label for="group_type">{L_GROUP_TYPE}{L_COLON}</label><br /><span>{L_GROUP_TYPE_EXPLAIN}</span></dt>
 			<dd>
+				{% EVENT acp_group_types_prepend %}
 				<label><input name="group_type" type="radio" class="radio" id="group_type" value="{GROUP_TYPE_FREE}"{GROUP_FREE} /> {L_GROUP_OPEN}</label>
 				<label><input name="group_type" type="radio" class="radio" value="{GROUP_TYPE_OPEN}"{GROUP_OPEN} /> {L_GROUP_REQUEST}</label>
 				<label><input name="group_type" type="radio" class="radio" value="{GROUP_TYPE_CLOSED}"{GROUP_CLOSED} /> {L_GROUP_CLOSED}</label>
 				<label><input name="group_type" type="radio" class="radio" value="{GROUP_TYPE_HIDDEN}"{GROUP_HIDDEN} /> {L_GROUP_HIDDEN}</label>
+				{% EVENT acp_group_types_append %}
 			</dd>
 		</dl>
 	<!-- ELSE -->
diff --git a/phpBB/docs/events.md b/phpBB/docs/events.md
index 467b03e8f3..4be1725090 100644
--- a/phpBB/docs/events.md
+++ b/phpBB/docs/events.md
@@ -172,6 +172,18 @@ acp_group_options_before
 * Since: 3.1.0-b4
 * Purpose: Add additional options to group settings (before GROUP_FOUNDER_MANAGE)
 
+acp_group_types_append
+===
+* Location: adm/style/acp_groups.html
+* Since: 3.2.9-RC1
+* Purpose: Add additional group type options to group settings (append the list)
+
+acp_group_types_prepend
+===
+* Location: adm/style/acp_groups.html
+* Since: 3.2.9-RC1
+* Purpose: Add additional group type options to group settings (prepend the list)
+
 acp_groups_find_username_append
 ===
 * Location: adm/style/acp_groups.html