Slicers are used to filter data visualizations in data discoveries and presentations. If a content item contains a slicer, you can select value from it in order to filter the visual(s) driven by it. The selected slice(s) will be displayed in the breadcrumb trial of the affected visual(s).
Enable and Disable Slicers
Slicers may be enabled or disabled by toggling the its funnel icon; when enabled, the visual is filtered according to the currently selected slice. When disabled, the slicer does not affect the visual.
The breadcrumbs trail will display all filters currently applied to the visual.
Depending on the design choices of the presentation author, slicers may appear on the presentation canvas, or they may be 'hidden.' Hidden slicers are often used to connect a slicer with multiple visuals and dynamic assets (text and infographics) across different slides. They can be accessed from the Presentation Menu.