One line captions help

You can't from the existing caption track.

Go back to the transcript and "create captions" again.

Edit: forgot to add...

If you have edits in the existing caption track (but not in the transcript), I would make a copy of the sequence with the original caption stream. (Right click -> duplicate to keep them as captions).

You can keep that caption track in the original sequence and just disable it; then "create captions" from the transcript. It will add a second track. HOWEVER, you cannot see both tracks at the same time, so it doesn't help editing. Just drag the sequence copy in as a nest, and you will see the captions as part of the nested video track. Using effect controls, just move that nest so you can see both captions.

Stan