Change your Calendar work days and the start of your week

By default, in Calendar, when you click Work Week, the calendar displays Monday, Tuesday, Wednesday, Thursday, and Friday. To select which days comprise your work week and to select the first day of each work week, do the following:

1. On the Tools menu, click Options.
2. Click Calendar Options.
3. Select the check boxes next to the days of the week that you want included in your work week.
4. In the First day of week box, click the day that you want.

 Select the days that you want included in the work week.

 Select the day to begin each work week.