Do I need to explain ?

https://www.dropbox.com/s/ul3msm5dgy9ot4c/Split%20system.mov?dl=0
Ok…
When?
Do I need to explain ?
Thanks

Not completely sure what you are asking for but if I understand it right I would say it is already possible with frames.
I use this to insert dialog in musicals.
Is this what you mean?
Edit: Or could it be that you are asking for a “one click” solution?

What teacue says. Illustration to show how you need to set the frame dropdowns.

For an “easy” way, you’ll need to wait for the next update - this is coming! See https://www.steinberg.net/forums/viewtopic.php?f=246&t=114580&p=778279&hilit=Coda#p778279

Thanks all,
for examples and information.
Alain