Final answer:
To assess product sales trends by age group, the system should be customized to segment the sales data into the designated age groups and present the data in an understandable format like graphs and charts.
Step-by-step explanation:
To analyze product sales trends by age group, the system should be configured to categorize and track data according to the specified age brackets, which are 'Under age 18', 'Ages 19-25', 'Ages 26-40', 'Ages 41-55', and 'Ages 56 and older'. These categories allow the product manager to observe how different age demographics interact with the products and spot any emerging trends. For effective visualization and understanding of these trends, data can be presented in various formats such as line graphs, bar charts, and pie charts, reflecting sales volume or revenue across these different age segments. This setup would enable the product manager to make more informed decisions on targeting specific age groups with marketing strategies and product developments.