From Joomla! Documentation
On this tab there is a list of menu items. You can choose between On All Pages, No Pages, Only on the pages selected and On all pages except those selected from the List.
If the latter two options are selected a list will show with all the menu items on as shown in the screenshot above. This allows you to assign modules to some but not all pages, and by selecting the menu links that you want the module associated with you can customize on what pages modules appear/don't appear. See How do you assign a module to specific pages? for more information.
- Delete: (Inherited/Allowed/Denied). Allow or deny Delete for users in the Public group. Delete Allows users in the group to delete any content in this extension.
- Edit: (Inherited/Allowed/Denied). Allow or deny Edit for users in the Public group. Edit Allows users in the group to edit any content in this extension.
- Edit State: (Inherited/Allowed/Denied). Allow or deny Edit State for users in the Public group. Edit State Allows users in the group to change the state of any content in this extension.
- Alternative Layout. If you have defined one or more alternative layouts for a module either in the template or Joomla! Core, you can select the layout to use for this module. See Layout Overrides in Joomla 2.5 for more information about alternative layouts.
- Module Class Suffix. A suffix applied to the CSS class of the Module. This allows you to create customized CSS styles that will apply just to this module. You would then modify the "template.css" file of your template to apply styling to this new class.
- Enter this parameter with a leading space to create a new CSS class for this module. Enter the parameter without a leading space to change the CSS class name for this module.
- See the tutorial Using Class Suffixes in Joomla! for more information.
- Caching. Use Global/No Caching. Whether or not to cache the content of this Module. A setting of "Use Global" will use the Cache Settings from the Global Configuration screen.
- Cache Time. The number of seconds for which to cache the item locally. It can safely be left at the default.
- Module Tag. The HTML tag for the module to be placed in. By default this is a div tag but other HTML5 elements can also be used.
- Bootstrap Size. (Values 0 to 12) This allows you to choose the width of the module via the span element built into bootstrap. For more information see the bootstrap documentation.
- Header Tag. The HTML tag to use for the modules header or title. This can be an h1, h2, h3, h4, h5, h6 or a p tag. Note that you must use a module style (chrome) of html5 or add your custom module styles in <mytemplate>/html/modules.php.
- Header Class. Here you can add optional CSS classes to add to the modules header or title element.
- Module Style. You can use this option to override the templates style for its position.