This is one of my biggest issues. Of course, I’m not aware of any other scriptwriting software that handles it either.
I’ve now written more than 6 episodes (300+ pages) in Causality and have developed some habits. Not necessarily good habits.
I track storylines (aka plots) with vertical separation.
Initially I used lanes for that, but Per convinced me to use blocks. So, if there are three storylines, there are three “rows” (horizontal blocks across) the whiteboard.
I track characters by color.
Here I mean primary characters. For example, protagonist is blue, antagonist is red, mentor is yellow, love interest is pink, henchman is green, etc. When a beat includes multiple characters, I select a primary and use that color. Not perfect, but works okay.
Typically, the storylines follow a specific character. So, most of that storyline will tend to be the same color, but there are exceptions when other characters get pulled into that storyline.
With this arrangement, I can view the general structure of an episode fairly well, and I can distribute action (plot) in “causal order” fairly well.
And, the most excellent feature of Causality is that I can slide beats between episodes. This happens frequently when writing TV series.
I stopped using tags because I found they either duplicated plot or duplicated character. So, there was no point in my case. I’m probably using them wrong.
Something else I’ve noticed over time: in my world, scenes = beats.
Meaning… out of 300 pages of script, very few scenes are composed of multiple “causality beats.” Maybe this is due to these being TV centric. Although, last month I wrote a movie (now in preproduction, yeah!) and it followed the same pattern.
I guess I’m just a simple writer! I keep a huge file of “potential beats” in Google Docs. But, as they get pulled into scenes, they don’t remain as separate beats.