Order your story elements even better.
You can create, edit and delete labels using the label manager screen. It is accessible from the project home screen in the 'Additional Tools'-category.
A label can be used in one specific tool or multiple tools. Use the filter at the top to see which labels are active for the highlighted tool. If you create/edit a label, select the right tools you want it to be available for.
Use distinct colors for labels to see at a glance what they mean. For example, use red for villains and green for your main characters.
You can apply a label to a story element by opening its corresponding edit page. There is a shortcut available to easily open the label manager screen.
When you're on the list of story elements, you can filter based on the attached labels by hitting the funnel-like icon.