There needs to be a way to select the preferred weekend days independent of the first day of the week.
I propose a second option in Account Settings that allows you to not only select the first day of the week but also identify the preferred weekend days.
Currently, if you select Sunday as the first day of the week in the Account Settings then the small drop down calendars on Board tasks show Sunday as the first column in the calendar (as most of our company and the US is accustomed to). The issue is this forces the Workload/Timeline views to shade Friday/Saturday as the weekend days. This causes the Workload view to show all scheduled work on Fridays as a red overtime circle because you are scheduling on the “weekend” (or not at all if you have weekends hidden), but our weekend is actually Saturday/Sunday.
If you select Monday as the first day of the week in the Account Settings then the Workload/Timeline views will shade Saturday/Sunday as the weekend days (which is great for us). However, now the small drop down calendars show Monday as the first column in the calendar (which many of our staff does not like).