Given a table which shows total working hours, sick, vacation.

In Pega, calculating values such as total working hours, sick hours, and vacation hours often involves using data transforms to manipulate and set property values based on logic defined within the application. A "Calculate field" in a data transform would allow for the dynamic calculation of these values based on inputs such as logged time entries, absence records, and other relevant data inputs. This method is efficient for real-time computation and updates of calculated fields within a table or data page.