Oops sorry, Picking it up today.
Firstly you might need placeholders (especially tags) when you are creating a skeleton. It can be done by adding the below in the tags field.
Here tag1 will be the place holder.
Now to use it is very simple. WE need another tiddler (other than the skeleton) to have the following.
<$set name="tag1" value="To-Do">
You might be using it with a button to create a new tiddler with the skeleton. So you can have something like below. (make sure you have the newtiddler plugin available)
<$newtiddler title="Add content here" skeleton="$:/_event_Skeleton" class=<<tv-config-toolbar-class>>></$newtiddler>
Let me know if this could suffice or you need me to add more information for this.
Regards
Shash