What’s the attendance?

For a small business, I created a visualization of the attendance for the available activities.
This client organizes classes every day of the week. The question was how busy these classes are.
 

I created a heatmap showing both the number of students per class and the occupancy relative to the maximum capacity.
 

• The color intensity indicates whether a class was busy or quiet.
• Each day of the week has its own cell, making it immediately clear which days are the busiest.
• Each week has its own row, allowing you to see fluctuations between weeks and spot any standout periods.