Guide

1. Inside your Figma design canvas, find and click the shape where you wish to add the rounded corners.

2. After that, head over to the right-side panel and locate the Appearance section under the Design tab.

3. Click the 'Corner Radius' text field and type your preferred input.

4. Next, click anywhere around the canvas to apply the changes.

5. After completing these steps, the rounded corners will be added to the selected shape.