1. From module's action menu, click Edit Text
   
   
2. This is same thing as core Text/Html module.
   (Starting with v2.5, you're no longer limited to MTT's built-in Text/Html; you can now create ToolTips anywhere on the page, within core and third party modules, including headers and footers)
3. 
4. Now let's add ToolTip to the word Content. ToolTips can be added by simply creating link with syntax [ToolTip,Style] For this demonstration, "sampleToolTip" and "sampleStyle" is already created by module.
5. 
6. We've added Sample ToolTip with Sample Style to the word "Content" in our Text/Html

Here's how the ToolTip appears when mouse appears over it

Continue on to Quick Setup to create your own Tooltips and Styles