Review the transcript
Play from the transcript, edit a caption and choose emphasized words.
The transcript is a flowing text block. During playback, the active caption segment is highlighted according to your characters-per-caption setting.
Click a word to move the Premiere playhead and start playback from that point. Playback continues beyond that word.
A faint | replaces a space where the caption will break onto another line. It is a preview marker, not text added to the caption.
Edit text
Double-click to open the small text editor. The caption text is selected by default. Type your correction and press Enter to save and resume playback.
The nearby Emphasize control marks the chosen word for styles that support emphasis. See Emphasis.
Changes to the number of words can make an edit incompatible with the original word timings when captions are re-grouped. Export a copy before substantial rewrites, and review the result after changing grouping.
Next
Use Caption options to choose how much text appears together, then insert your captions.