Firstly, the difference between "Models" and "Filters":

•  “Models” represent the column values. When generating a Report, they can be saved and then reused to generate a new Report. 
•  “Filters” determine the content within the columns.

Eg: a "Model" saved with the value "CIRCUIT", has a column with the items corresponding to it (in this case: VISA, MASTERCARD, AMEX, etc.).

Using the "Filters" it is possible to establish the recurring content of the column and therefore which items to see among the available values ​​(in this case: Visa, Mastercard, Amex etc.)