Larian Studios Forums Baldur's Gate III Baldur's Gate III - Mega-threads and Guides Party Size Discussion

As title suggests, I'm looking for a way to tweak the game files and have a full party of six in my next playthrough.

I know it can be done somehow, since people have been doing it from the start of the EA in October, but any attempt to google a guide about the topic brings me the the most useless results (including all the countless previous threads in this forum about people asking it as the default for the game. You know, the ones Larian will never pay any attention to).

If anyone could come up with a fool-proof guide about how to do it step by step I would greatly appreciate it.