document how to set dock or panel

_toc.yml

@@ -101,6 +101,7 @@ chapters:
             sections:
               - file: admin-guide/configuration/desktop/desktop
               - file: admin-guide/configuration/desktop/gnome
+              - file: admin-guide/configuration/desktop/program_starter
               - file: admin-guide/configuration/desktop/keyboard_layout
               - file: admin-guide/configuration/desktop/xrdp
               - file: admin-guide/configuration/desktop/autologin

admin-guide/configuration/desktop/program_starter.md

@@ -0,0 +1,19 @@
+# Gnome Program Starter: Dash, Dock or Panel
+
+The default program starter on Gnome is called dash and it is a bit strange for users of other operating systems. But there are extensions which provide a move conventional dock like MacOS or a panel like Windows.
+
+The dock can be enabled in Hiera with 
+
+```
+gnome::program_starter: dock
+```
+other valid values are `panel` and `dash`.
+
+The dock is default in RHEL9 as the panel currently has a [bug on RHEL9](https://github.com/home-sweet-gnome/dash-to-panel/issues/1891) which limits its usability.
+
+Note that this will only set the default configuration which can be changed by the user.
+
+To reset the user specific configuration run
+```
+rm  ~/.config/dconf/user
+```