does anyone know how can i exclude the weekends ?

i’m using deneb for gantt chart by davide in power bi and i’ve noticed that it calculates the weekends, i don’t understand in coding so i don’t know how to fix that ? here is the json script https://github.com/PBI-David/Deneb-Showcase/blob/main/Gantt%20Chart/Gantt%202.0%20Spec.json