Insert Frames into Timeline
It would be useful if the user could insert frames into the timeline (similar to Adobe Animate) so that it is easier to edit a recording in the likely event that new dialog needs to be inserted.
Kyle Miller commented
I don't think "Insert Time" is quite the same thing, unless, of course, it expands the entire timeline and not just the highlighted section. I need to insert some new dialog and I need to do it in such a way as to not disrupt the synchronization of the segments that follow it. There are currently 30+ tracks on this timeline - this doesn't look very easy.
Does the Timeline > Insert Time menu command do what you want?
More info: https://helpx.adobe.com/adobe-character-animator/using/refining-a-recorded-performance.html