You can actually Ctrl+A now to select all of the chord sheet (Ctrl+A used to Play).
Or they can add an option in the DRAG + to not include 2 bar count-in like you have in Audio Render.
Or you can go over to Image Line and request a bar offset adjust like most other DAW's have.
If you solo a track the Audio Render should just render the one track if it's on one file per track.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
BB23-Drag-+-Option-Count-in.png (7.26 KB, 228 downloads)
BB23-Audio-Render.png (9.44 KB, 227 downloads)