Video clips, image clips, text clips, and blank clips can all be placed on video tracks.

When multiple video tracks are used, clips on higher tracks are rendered on top of clips on lower tracks. e.g., A title text clip on video track 2 would appear on top of a video clip on video track 1.

Show / Hide
In timeline mode, uncheck Track -> Show Track on Output, or click the eye icon on the left end of the track, to temporarily stop any clips on the track from being rendered in the sequence. This affects both the sequence preview and any saved video, including when the current sequence is used as a clip inside another sequence.

Enable / Disable Solo
In timeline mode, check Track -> Solo Track, or click the person icon on the left end of the track, to temporarily allow only the clips on the track from being rendered in the sequence. This affects both the sequence preview and any saved video, including when the current sequence is used as a clip inside another sequence.

Lock / Unlock
In timeline mode, select Track -> Lock Track, or click the lock icon, to prevent accidental changes to any clips on the track.

Collapse / Expand
In timeline mode, check Track -> Collapse Track, or click the thin bar icon on the left end of the track, to use less space for the track on the sequence. Thumbnails are only shown on track clips when the track is expanded, otherwise the clip name is shown instead.

Only audio clips can be placed on audio tracks.

All audio tracks are mixed together when the sequence is played or saved as a video. e.g., A narration audio clip on audio track 2 can be heard at the same time as the sound track of a video on audio track 1.

Mute
In timeline mode, select Track -> Mute Track, or click the speaker icon on the left end of the track, to temporarily stop any clips on the track from being heard in the sequence. This affects both the sequence preview and any saved video, including when the current sequence is used as a clip inside another sequence.

Enable / Disable Solo
In timeline mode, check Track -> Solo Track, or click the person icon on the left end of the track, to temporarily allow only the clips on the track from being heard in the sequence. This affects both the sequence preview and any saved video, including when the current sequence is used as a clip inside another sequence.

Lock / Unlock
As for video tracks.

Collapse / Expand
As for video tracks, except audio clips will show a waveform instead of thumbnails when expanded.

Volume & Pan
In timeline mode, each track has a volume slider and a stereo pan slider. This volume and pan is applied to all audio clips on the track.