Using the Camera Space
A camera space manipulator is built into the rotation manipulator. You can rotate entities based on the editor’s camera view.
To use the camera space
In the viewport, select an entity.
Adjust the camera around the selected entity in the viewport. You can use the following camera shortcuts to adjust your view. Adjusting the Camera View
In the following example, you can adjust the camera space so that your selected entity remains the center of focus in the viewport.