Marco Russo shows how you can display just the top few products in each grouping using Power BI:
A common approach to this scenario is to create a complex measure that hides the result if the element should not be displayed. In other words, it computes the ranking of the product and it blanks out the result if the ranking is larger than three. Though easy to implement, this approach requires modifying all the measures that should be displayed in a visual and negatively impacts performance. A better solution is to create a specific measure to use in the visual-level filter: that measure is executed only once for each product to define the set of visible items, without requiring any change to the other measures used in the visualization. We will see different options to solve the scenario.
Marco shows off a few techniques to get this done.