To operate a hub with filters, first set up your tags in the filters themselves. Hover over the filter until the "megaeditor" appears and select the "Edit" link icon on the left. This will display a series of optional filters and tags. These are all editable and should be customized by you. If you only need one filter, simply delete the Headline + Nav Container you do not need.
To ensure the events filter properly, tag your events. This is applied to each event hub card through either the hub manager (the top left icon when hovering over the hub element itself) and clicking through to edit each event, by hovering over the hub card and clicking the "Edit Event" cog, or during setup if adding external events.