diff --git a/Manuals/Tcar-ug/Scripts/Bash/prepare.docbook b/Manuals/Tcar-ug/Scripts/Bash/prepare.docbook
index 88cf009..795cc3a 100644
--- a/Manuals/Tcar-ug/Scripts/Bash/prepare.docbook
+++ b/Manuals/Tcar-ug/Scripts/Bash/prepare.docbook
@@ -67,13 +67,65 @@
         This option verifies packeges required by
         <command>centos-art.sh</command> script. installs or updates
         required packages. When required packages aren't installed,
-        this option uses <command>sudo yum install</command>
-        command to perform the installation task. When required
-        packages are installed, this option uses <command>sudo yum
-        update</command> to update them, if there is any related
-        actualization to be applied on. In both cases, it is required
-        that you configure the <command>sudo</command> command first.
+        this option uses <command>sudo yum install</command> command
+        to perform the installation task. When required packages are
+        installed, this option uses <command>sudo yum update</command>
+        to update them, if there is any related actualization to be
+        applied on. In both cases, it is required that you configure
+        the <filename>/etc/sudoers</filename> configuration file
+        first.
     </para>
+
+    <important>
+    <para>
+        To edit the <filename>/etc/sudoers</filename> configuration
+        file, do login as <quote>root</quote> first and then, use
+        <command>visudo</command> command for edition.
+    </para>
+    </important>
+
+    <para>
+        <xref linkend="scripts-bash-prepare-sudoers" /> illustrates
+        the relevant parts you need to change inside the
+        <filename>/etc/sudoers</filename> configuration file in order
+        for the <function>prepare</function> functionality to be able
+        of installing and/or updating the software packages that
+        <command>centos-art.sh</command> needs to work. The
+        configuration shown in this example assumes you are using
+        <quote>centos</quote> as username.
+    </para>
+
+    <example id="scripts-bash-prepare-sudoers">
+    <title>The <filename>/etc/sudoers</filename> configuration file</title>
+    <screenshot>
+    <screeninfo><filename>/etc/sudoers</filename> configuration file</screeninfo>
+    <mediaobject>
+    <textobject>
+<programlisting>
+## Installation and management of software
+Cmnd_Alias SOFTWARE = /bin/rpm, /usr/bin/up2date, /usr/bin/yum
+
+## Next comes the main part: which users can run what software on
+## which machines (the sudoers file can be shared between multiple
+## systems).
+## Syntax:
+##
+##      user    MACHINE=COMMANDS
+##
+## The COMMANDS section may have other options added to it.
+##
+## Allow root to run any commands anywhere
+root    ALL=(ALL)       ALL
+
+## Allow the centos user to run installation and management of
+## software anywhere.
+centos  ALL=(ALL)       SOFTWARE
+</programlisting>
+    </textobject>
+    </mediaobject>
+    </screenshot>
+    </example>
+
     </listitem>
     </varlistentry>