[diegoperini]

Can you simulate/calculate how voltages and signals behave in Ki-CAD or do you need pen and paper or an entirely different tool to achieve that? What does the entire workflow look like, not jut the circuit layout design?

P.S: I'm the ultimate noob on these topics.

[rowanG077]

There are plugins that can do that. It's called spice[1].

[1] https://en.wikipedia.org/wiki/SPICE