Hi RoGenos.
UseTracks are amazing! I started seriously playing around with these three months ago and I'm super impressed with what can be done.These templates are only guides. You're completely free to create your own templates.
Points to keep in mind when making a template...
1) The template is the map for where the chords are located in the audio file, and it is used by BIAB to find the section of audio that corresponds to the chord on the chordsheet.
2) Leave the 4-bar automatic ending active when you make a template and have another template just for endings.
For example, I created a UserTrack called...
- Song_4m_Pop_1_bossabass_keyC (bars 1 to 80) 085.sgu
The ending file for this track needed to be...
- Song_4m_Pop_1_bossabass_keyC (bars 1 to 80) 085.endings.sgu
This is covered in the AudioTools video below. While this shows how UserTracks are made in Realband, the video contains some useful information that also relates to BIAB. This video covers ending, holds, etc. Although I made my tracks in BIAB, I found this video a terrific help.
3) Have chord patterns that cover 1 and 2 bars.
4) The keys that PG Music use -- C, E, G and A -- are just recommended. These chords are transposed to get other chords. For example, your chordsheet might not have a Bm chord so BIAB would transpose Cm to get that chord.
5) You can have as many different sgu files in a UserTrack directory as you like. This means that you do not need to put every chord you want on just a single, 20 minute (or longer) sgu file. It might be easier to have 10 different 2-minute sgu files, etc. The only requirement is that each file's name matches the corresponding audio file's name (excluding the extension).
I hope this helps
--Noel
P.S. If anyone who reads this is interested in knowing more about UserTracks, PG Music's tutorials are found at the below web page.
https://www.pgmusic.com/usertracks1.htm