Yes, it’s my understanding that Wavelab Elements doesn’t allow to freely move the track ID for songs that overlap, but regular Wavelab 8 does.
You can adjust crossfades manually in a montage (CD layout mode) on the timeline by sliding regions on separate audio tracks/lanes, and you can also fine tune the clip placements or track marker placements in a list form by entering the times numerically if desired.
I recommend Wavelab for sure, I’ve found nothing better for sequencing/mastering on OSX.