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Special positions are: sticky_left, sticky_right, notice, tool_bottom. You can use them for any module type. For using this, please go to Module Manager and config your module to your desired position.

You can disable by:

• Go to Administrator » Template Manager » Your_Template » Tab: Advanced » Use special positions » select: No for all special positions
• Go to Administrator » Module magager » Your_Module(by postion: sticky_left/stickey_right/notice/tool_bottom) » Status: Unpublish for that module

The solution is using Module Class Suffix. You can customize button, module content follow Module Class Suffix

E.g. Module Class Suffix: @bullhorn then:
- Class of button is 'fa-bullhorn'. If without @... the default is 'fa-pushpin'