Edit Page - Audio Waveform Height

I accidentally did the thing I wanted to do but I can't recreate it.
Expanding the waveform heights of audio tracks without increasing the track height itself so the waveform fills the clip. I didn't normalise anything and I haven't changed the gain on any clips, pressed a button and boom! Certain track waveforms now filled the clip (amazing) while others remain invisible unless I increase the track height.
Track Waveform Zoom options are all greyed out.
How on earth do I replicate this?
Using DaVinci 17.0 on MacOS Catalina
Expanding the waveform heights of audio tracks without increasing the track height itself so the waveform fills the clip. I didn't normalise anything and I haven't changed the gain on any clips, pressed a button and boom! Certain track waveforms now filled the clip (amazing) while others remain invisible unless I increase the track height.
Track Waveform Zoom options are all greyed out.
How on earth do I replicate this?
Using DaVinci 17.0 on MacOS Catalina