Week start day for self-scheduling

The DAY_WEEK_STARTS registry parameter specifies the first day of the week that is displayed in the calendar in the Self Scheduling screen in the desktop application and in the ETM. The week start day used when validating self-scheduling rules is determined by the schedule start date for the self-scheduling process. It is recommended to align the start date for self-scheduling processes with the day specified in the DAY_WEEK_STARTS registry parameter. This ensures that weeks displayed in the calendar align with the weeks used when validating self-scheduling rules.