After making relationship variables in start-up such as:
*create robocop_relationship
you go over to the stats page and create a stats-chart like the following:
*stat_chart
percentage robocop_relationship relationship
the "percentage tells CS the type of chart you want, the variable displays the value and the last word names the chart-bar.
Edit: Welcome to the community and Just in case the following link has more resources including hands-on tutorials that can help
Link for beginners