Groove agent drag drop audio

I have an audio slice from a few minute speech. I made a 10 second slice on a new track.
I drag that slice to groove agent box, and it seems it’s taking the whole audio, not the slice I am trying to copy.

What I am trying to do is take bits of a speech and put them together in different ways.
I tried loopmash, but coulnd’t figure out how to make it work to my satisfaction.

Any ideas on a good workflow for doing this?
Thanks,
fox