The Event Channels Filter is a way for users to sort the entries within the Event Channels module on the app by a specific term. To enter a filter category for an Event Channels record, enter the term(s) in the Filter 1 field (on the Event Channels template or in the CMS).
If you have more than one filter term that applies to an entry, each term should be separated by the pipe symbol | (the key located below your backspace key on the keyboard).