How to add section(category) in control panel

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1. Override the class PortletCategoryKeys (in ext-impl\src\com\liferay\portal\util\PortletCategoryKeys.java)
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13package com.liferay.portal.util; /**   * @author apoorva.prakash   *   */ public class PortletCategoryKeys {   public static final String CONTENT = "content" ;   public static final String MY = "my" ;   public static final String PORTAL = "portal" ;   public static final String SERVER = "server" ;   public static final String MYCATEGORY = "mycategory" ;   public static final String[] ALL = {MY, CONTENT, MYCATEGORY , PORTAL, SERVER}; }Put the category in ALL array in the order you wish to appear your category.2. Now add portlet in this category using the following entry in liferay-portlet-ext.xml file
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5< portlet >      < portlet-name >portlet_id</ portlet-name >   < control-panel-entry-category >mycategory</ control-panel-entry-category >   < control-panel-entry-weight >1</ control-panel-entry-weight > </ portlet >
here  portlet_id is the id of the portlet that you wish to add in our custom category. Specify the name of the category in entry and sequence of portlet appearance in determined through . The higher the weight, upper will be the portlet(weight can also be in floating number).
 
3. In portlet.xml file,  add role reference
<security-role-ref>
        <role-name>role-name</role-name>
</security-role-ref>

 
4. in liferay-portlet.xml add role mapper
<role-mapper>
    <role-name>role-name</role-name>
    <role-link>actual-role-name</role-link>
</role-mapper>

5. Now an important point, we must enter the category name entry in language-ext.properties file in ext-impl/src/content, so that our category can be recognized, otherwise you'll get category name as "category.mycategory"
1category.mycategory=My New CategoryThat's all I did, hope will work for you too.
 
6.  In resources/resource-actions/default.xml write permission
<supports>
 <action-key>ACCESS_IN_CONTROL_PANEL</action-key>
 <action-key>VIEW</action-key>
</supports>

 
7. point to this file in resources/portlet.properties
resource.actions.configs=resource-actions/default.xml