How to Clear Legend Choices

Dear Support,

Is there a way to clear a category choice after it has been selected?

When I click the color coded event category for “Preschool Promise” it shows those events, but I cannot clear the events and get back to the main “calendar”. I am trapped in the category, like this:

https://kfheadstart.org/calendar/category/preschool-promise/

Thank you for your help, Erin

The page I need help with: [log in to see the link]