If you have created many events with attached categories in your Workspace and want to filter them per category, or just want to see events linked to a specific category, you can do so via the buttons at the top of your Workspace page.
Each button displays the name of the category. The number indicates how many events the category is linked to.
Attach Categories to an event
Attach Categories to an event by following these steps:
Select the event
Click on `Settings`
Click on `Setup`
Under Categories, click on `Select`
Choose the categories you wish to attach to the event
You can read more about how to create categories for your contacts here.