Mark a Specific Week Day as Non-working

1. The Project Settings form can be opened by using the Project Settings button
   on the Home page of the ribbon.
2. Select the Scheduling Calendars option under the Calendars section of the tree in the form.
3. Select the relevant calendar in the calendar list on the page.
4. Use the mouse to select the relevant week day (e.g. Sunday) at the top of calendar grid.
5. Press the Non-Work button to change the week day by default to non-work.
6. Press the Close button to apply the changes.