Every question in your survey becomes an interactive chart.
We can click to drill into S1, which asks respondent's their speciality.
If we click on General Practitioners, we can see the N equals button in the toolbar is now "60" as well as green to indicate there are now current filters.
Click on the N equals, we can see our current filters. To clear current filters we can press the clear button in the toolbar, or again click on the filtered value.