A calendar of a calendar owner can be identified. The calendar can include at least one calendar entry. Each calendar entry can be associated with access restrictions specific to the entry and/or a type associated with the entry. An attempt from a non-owner to access the calendar of the owner can be received. A relationship between the non-owner and the owner can be determined, which is used to grant access privileges. A non-owner can be permitted to access/change the owner's calendar entries based upon comparisons of the granted privileges and the access restrictions. For example, when certain approved people view busy-time scheduled in a user's calendar, any non-important booked time can be shown as time availably for scheduling events with the user. When an approved person schedules a previously book time slot, and an owner agrees to this change, then existing appointments are automatically rescheduled/adjusted to avoid conflicts.