You are mixing up HABmin and HABPanel: two different things.
Template widget - tutorial & examples - make your own widget!, although I would recommmend to use the included widgets (for example a slider) first and then go to the advanced custom widgets.
Which step of the “Getting Started” did not work for you?
http://docs.openhab.org/addons/uis/habpanel/readme.html#getting-started