Here you select whether you want to activate the template by internal values (activated by the Condition) or by user variables (that must be filled in the program at run-time).
If you select "Template", the following window will show:
Here you have to set the values that makes the template work under the condition. This is useful for having internal control of the values when you need that the template just either be activated or not by the condition.
If you select "User variable" you will see this window:
In this one you have to select the variables that will contain the data to make the template work. This one is useful for full featured multi-currency systems.
Note that the loading, content and storing of these variables are under your control, not under the template control. The template just use them if they have values.