Welcome to the forum.
Unfortunately, PrE does not allow for supplemental Audio Tracks, when authoring.
I use Adobe Encore for this, but it is only available bundled with Premiere Pro. I do not know if some other, third party, full-featured authoring apps., like Sony's DVD Architect can do that, but I would suspect that they can. The specifications for DVD Architect should have that information, and as it's quite common in full-featured authoring apps., I anticipate that it has that capability.
If you do go with that program, our MOD, Steve Grisetti, has written a very good book on DVD Architect, and it's available at Muvipix.com.
Thanks for the plug, Bill!
But just to supplement what Bill said, only the professional version of DVD Architect offers optional audio tracks. The DVD Architect Studio version gives you only one audio track per video.
Thank you for that clarification. That saves the OP time in comparing the program versions.