To add search in slicer in Power BI, you can follow these steps:
- Select the slicer you want to add a search box to by clicking on it.
- In the Visualization pane, go to the Format section (paint roller icon).
- Expand the “Card” section.
- Toggle the “Search” option to on.
Once you complete these steps, a search box will be added to the slicer where users can type and filter the slicer values.
Here is an example: