ZeroFish is an experimental program that tries to combine the best of Stockfish and Lc0 in a number of experiments.
Experiment 1 - it's widely assumed that Stockfish is better in tactics than Lc0, we setup a crude MEA system:
In the main folder we install ZeroFish (which is ProDeo in disguise) that will serve as an arbiter;
In the sub folder MEA1 we install Stockfish 11;
In the sub folder MEA2 we install Lc0 version 0.25.1
When calculating ZeroFish will fire up both Stockfish and Lc0 with the position while ZeroFish is trying to figure out if the position is tactical or not. When time is up ZeroFish decides which move to play, if the position is tactical it will play the move of Stockfish, else the move of Lc0.
That's the idea.
The process can be followed on the screen by manipulating the depth, we take Arena as an example.