diff --git a/phpBB/docs/events.md b/phpBB/docs/events.md
index e9a382c6e6..fb7dc3e172 100644
--- a/phpBB/docs/events.md
+++ b/phpBB/docs/events.md
@@ -854,6 +854,13 @@ overall_header_stylesheets_after
 * Purpose: Add asset calls after stylesheets within the `</head>` tag.
 Note that INCLUDECSS will not work with this event.
 
+posting_editor_add_panel_tab
+===
+* Locations:
+    + styles/prosilver/template/posting_editor.html
+* Since: 3.1.6-RC1
+* Purpose: Add custom panel to post editor
+
 posting_editor_bbcode_status_after
 ===
 * Locations:
@@ -931,6 +938,13 @@ posting_editor_subject_before
 * Since: 3.1.0-a2
 * Purpose: Add field (e.g. textbox) to the posting screen before the subject
 
+posting_layout_include_panel_body
+===
+* Locations:
+    + styles/prosilver/template/posting_layout.html
+* Since: 3.1.6-RC1
+* Purpose: Add include of custom panel template body in posting editor
+
 posting_pm_header_find_username_after
 ===
 * Locations:
diff --git a/phpBB/styles/prosilver/template/posting_editor.html b/phpBB/styles/prosilver/template/posting_editor.html
index 5804f95579..1581afdb12 100644
--- a/phpBB/styles/prosilver/template/posting_editor.html
+++ b/phpBB/styles/prosilver/template/posting_editor.html
@@ -116,6 +116,7 @@
 						<a href="#tabs" data-subpanel="poll-panel" role="tab" aria-controls="poll-panel">{L_ADD_POLL}</a>
 					</li>
 				<!-- ENDIF -->
+				<!-- EVENT posting_editor_add_panel_tab -->
 			</ul>
 		</div>
 	<!-- ENDIF -->
diff --git a/phpBB/styles/prosilver/template/posting_layout.html b/phpBB/styles/prosilver/template/posting_layout.html
index 630afdb832..34f0c63d5c 100644
--- a/phpBB/styles/prosilver/template/posting_layout.html
+++ b/phpBB/styles/prosilver/template/posting_layout.html
@@ -77,6 +77,8 @@
 
 <!-- IF S_SHOW_POLL_BOX or S_POLL_DELETE --><!-- INCLUDE posting_poll_body.html --><!-- ENDIF -->
 
+<!-- EVENT posting_layout_include_panel_body -->
+
 <!-- IF S_DISPLAY_REVIEW --><!-- INCLUDE posting_topic_review.html --><!-- ENDIF -->
 
 </form>