Part of the site-wide configuration for scheduling includes default settings for start time, end time and maximum hours. These will apply to all contacts by default, but you can also make custom settings to override the defaults for one or more contacts as follows:
Open the maintenance page for a target contact. This will typically be a staff contact, but might also be a client or vendor contact.
Choose the Details related-information tab.
Expand the Scheduling heading.
Set the appropriate values for start time, end time, and maximum hours per day. (For more information about how these settings affect scheduling, see the “How time gets scheduled” section later in this topic.)
Changing a contact's schedule will require Microsoft Dynamics Marketing to update all of the contact's scheduling records. This can take a few minutes.