?????

Not enough information.

I suspect you’re talking about a word extension. It should stop at the next rest. If you need to stop it sooner, I would use a hidden grace rest.

Mouse in an eighth note. Opt-G to tun it into a grace note. R to change it to a rest. H to hide it.

Go backand double-click 0n your last lyric, to select it. Click somewhere in that measure. The line should go back to the rest, and stop there.