How different users can have their preferred week start day

Calendar administrators can set the start day in Settings > Date & Time. This setting, like other default configuration choices, applies to all users.

However, if other users want to view the same calendar with a different week start day, they can use a link parameter to customize their calendar view this way. 

For example, if the calendar admin has set the week start day to Sunday, but a user would prefer to have the week start set to Monday, they can add weekStartDay=mo to their calendar link. 

Here's the default view of a calendar, with the week start day set to Sunday:

The same calendar link with the weekStartDay=mo link parameter shows the calendar with a week start day of Monday:

User can bookmark their calendar link with the link parameter added, so it's easy to load their customized view with their preferences.

Note: Link parameters can be used with Teamup in a browser but do not apply to the Teamup app.

See details on how to use link parameters.