diff --git a/docs/zr.css b/docs/zr.css
index 3caf27b..15b377a 100644
--- a/docs/zr.css
+++ b/docs/zr.css
@@ -136,7 +136,7 @@ td.valueoption
 {
     font-family: "Courier New", "Lucida Console";
     color: #000000;
-    width: 125px;
+    width: 150px;
 }
 
 .container
diff --git a/docs/zr_manual.htm b/docs/zr_manual.htm
index f46ffca..b249341 100644
--- a/docs/zr_manual.htm
+++ b/docs/zr_manual.htm
@@ -119,6 +119,15 @@ Written by Richard Helgeby</p>
 					<li><a href="#3.23.5">Class Editor</a></li>
 				</ol>
 			</li>
+			
+			<li>
+				<a href="#3.24">Admin Authentication</a>
+				<ol>
+					<li><a href="#3.24.1">Admin Flags Used In Zombie:Reloaded</a></li>
+					<li><a href="#3.24.2">Predefined Admin Groups</a></li>
+					<li><a href="#3.24.3">Console Variables</a></li>
+				</ol>
+			</li>
 		</ol>
 	</li>
 	
@@ -3942,6 +3951,93 @@ can be displayed to player that enter the volume.</p>
 
 <p>(Docs incomplete.)</p>
 
+
+<h3><a name="3.24" />3.24 Admin Authentication</h3>
+
+<p>Zombie:Reloaded use SourceMod to authenticate players. There are two ways to do this; flag based
+or group based. With flag authentication a certain admin flag is required to be set, and with group
+authentication the player must be member of a certain group to do certain types of operations.</p>
+
+<p>The reason to use group authentication could be to let admins have full access in SourceMod so
+they get access to configure all plugins, but still limit access to commands in Zombie:Reloaded.
+When using flag authentication the permissions will be global across all plugins, including
+Zombie:Reloaded.</p>
+
+<h4><a name="3.24.1" />1. Admin Flags Used In Zombie:Reloaded</h4>
+
+<p>Admins must have the appropriate
+<a href="http://wiki.alliedmods.net/Adding_Admins_(SourceMod)#Levels">SourceMod admin flags</a> to
+do certain types of operations. Below is a list of all flags used in Zombie:Reloaded and what type
+of operation they grant:</p>
+
+<blockquote><table>
+	<tr>
+		<th>Flag:</th>
+		<th>Operation type:</th>
+	</tr>
+	
+	<tr>
+		<td class="parameter">generic</td>
+		<td>Access to generic operations like infecting, teleporting, and spawning players.</td>
+	</tr>
+	
+	<tr>
+		<td class="parameter">config</td>
+		<td>Access to operations that change settings in Zombie:Reloaded.</td>
+	</tr>
+</table></blockquote>
+
+<h4><a name="3.24.2" />2. Predefined Admin Groups</h4>
+
+<p>If group authentication is used, admins must be member of one of these
+<a href="http://wiki.alliedmods.net/Adding_Groups_(SourceMod)">SourceMod groups</a> to do the
+following operations:</p>
+
+<blockquote><table>
+	<tr>
+		<th>Group:</th>
+		<th>Operation type:</th>
+	</tr>
+	
+	<tr>
+		<td class="valueoption">zr_admins</td>
+		<td>Full access to all commands in Zombie:Reloaded.</td>
+	</tr>
+	
+	<tr>
+		<td class="valueoption">zr_moderators</td>
+		<td>Access to generic operations like infecting, teleporting, and spawning players.</td>
+	</tr>
+	
+	<tr>
+		<td class="valueoption">zr_configurators</td>
+		<td>Access to operations that change settings in Zombie:Reloaded.</td>
+	</tr>
+</table></blockquote>
+
+<h4><a name="3.24.3" />3. Console Variables</h4>
+
+<blockquote><table>
+	<tr>
+		<th>Console variable:</th>
+		<th>Default:</th>
+	</tr>
+	
+	<tr>
+		<td class="commandheader">zr_permissions_use_groups</td>
+		<td class="commandheader">0</td>
+	</tr>
+	<tr>
+		<td class="indent" colspan="2">
+			<p>Use group authentication instead of flags to access admin features. Generic admin
+			flag is still required on some features.</p>
+			<p>Options:<br />
+			0 or 1</p>
+		</td>
+	</tr>
+</table></blockquote>
+
+
 <h2><a name="4" />4. How To Play</h2>
 
 <p>(Incomplete) Feel free to contribute to this section. Make a new thread with suggestions in the
diff --git a/src/zr/admintools.inc b/src/zr/admintools.inc
index e767679..725f7c4 100644
--- a/src/zr/admintools.inc
+++ b/src/zr/admintools.inc
@@ -55,6 +55,13 @@ enum OperationTypes
  */
 stock bool:ZRIsClientPrivileged(client, OperationTypes:operationType = OperationType_Generic)
 {
+    // Check if console.
+    if (client == 0)
+    {
+        // Console always has full access no matter what.
+        return true;
+    }
+    
     // Validate client index.
     if (!ZRIsClientValid(client))
     {