How can I output only the track (event) I specified in the impress rendering?

I am using Cubase 13.

I am trying to do an impress render with a Kontakt7 multi-out.

But every time I do an impress rendering of a single track in Cubase, it always outputs to the three outputs of the Kontakt7 multi-out as shown in the image (only the specified track has sound in it).

How can I output only the track (event) I specified in the impress rendering?