Use the Viewport to navigate and manipulate your point cloud. The Viewport also shows live X/Y/Z mouse coordinates. Press the F1 key in Aura at any time to access Help and see the full range of mouse actions and keyboard shortcuts available to you.
The bounding box shows the extent of your point cloud. You cannot interact with the bounding box but you can hide it by unselecting the point cloud on the from the Visualize tab.