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Components Help Screens
Select Components → Messaging → Read Private Messages from the drop-down menu on the Back-end of your Joomla! 2.5.x installation.
The Private Messaging screen allows you to send messages to other Back-end Joomla! users. You may read, write, send, and delete messages here. In addition, you may also manage message settings and grouping options.
At the top right you will see the toolbar:
The functions are:
Filter by Partial Title
You can filter the list of messages by typing part of the subject, or you can select Read, Unread or Trash messages.
If you have a large number of messages on the list, you can use this filter to find the desired messages quickly. Enter part of the subject and press "Search" to display the matching messages. You can enter in whole words or part of a word. For example, "ooml" will match all subjects with the word "Joomla!" in them.
Filter by Read, Unread or Trash State
In the upper right area, above the column headings, is a drop-down list box as shown below:
Click the Options button to open the Messaging Options window which lets you configure this component.
This screen allows you to set the component permissions in Joomla. This is important to consider if you have sites with many different user categories all of whom need to have different accessibilities to the component. The screenshot below describes what you should see and the text below that describes what each permission level gives the user access to:
You work on one Group at a time by opening the slider for that group. You change the permissions in the Select New Settings drop-down list boxes. The options for each value are Inherited, Allowed, or Denied. The Calculated Setting column shows you the setting in effect. It is either Not Allowed (the default), Allowed, or Denied. Note that the Calculated Setting column is not updated until you press the Save button in the toolbar. To check that the settings are what you want, press the Save button and check the Calculated Settings column.
The default values used here are the ones set in the Global Configuration Permissions Tab
There are two very important points to understand from this screen. The first is to see how the permissions can be inherited from the parent Group. The second is to see how you can control the default permissions by Group and by Action. This provides a lot of flexibility. For example, if you wanted Shop Suppliers to be able to have the ability to create an article about their product, you could just change their Create value to "Allowed". If you wanted to not allow members of Administrator group to delete objects or change their state, you would change their permissions in these columns to Inherited (or Denied). It is also important to understand that the ability to have child groups is completely optional. It allows you to save some time when setting up new groups. However, if you like, you can set up all groups to have Public as the parent and not inherit any permissions from a parent group.
Click the My Settings button to open the Messaging Settings window which lets you configure this component for the currently logged in user.