mention GUI dialog in passing

_manual/22_using-control-surfaces/06_Ableton_Push2.html

@@ -35,12 +35,6 @@ menu_title: Ableton Push 2
   in the line that says "Ableton Push 2" in order to activate Ardour's
   Push 2 support. 
 </p>
-<!--
-<p>
-<img alt="the Faderport configuration dialog"
-     src="/images/push2_dialog.png">
-</p>
--->
 <p>
   Once you select the input and output port, Ardour will initialize
   the Push 2 and it will be ready to use. You only need do this
@@ -49,6 +43,17 @@ menu_title: Ableton Push 2
   future sessions.
 </p>
 
+<h2>Push 2 Configuration</h2>
+<p>
+  The only configuration option at this time is whether the pads send
+  aftertouch or polyphonic pressure messages. You can alter this
+  setting via the Push 2 GUI, accessed by double-clicking on the "Push
+  2" entry in the control surfaces list.
+<p>
+<img alt="the Push 2 configuration dialog"
+     src="/images/push2-gui.png">
+</p>
+
 <h2>Basic Concepts</h2>
 <p>
   With the Push 2 support in Ardour 5.4, you can do the following