SystemVision "Waveboxes" are intended for very convenient yet powerful waveform viewing. You can add a wavebox as follows:
Click on the Waveform Probe icon:
This will bring up a wavebox and attach a probe to your mouse cursor.
Drag the cursor to a schematic net and click to view that net's waveform, or
Drag the cursor over a component and click. Then click on an internal item to view its waveform.