>2 working on projects related to said design Why is this included? If two people are working on the back end for a widget, and the designer spends 3 days chan

>2 working on projects related to said design Why is this included? If two people are working on the back end for a widget, and the designer spends 3 days changing the colors of buttons and types of sliders on a widget, why does this mean that the two people working on the backend aren't making their usual progress in the meantime? Maybe they lose a few hours of time to integrating the design changes, but a few days?