Bookings in a tool available through Office 365 that allows you to create a webpage where users can book time on your Outlook calendar. It allows you to restrict the scheduling to specific days/time periods (such as during office hours), as well as set limits on the length of appointments, and how far in advance users must schedule (i.e. at least 24 hours prior to the appointment). It is also possible to create Bookings calendars for groups, so that users can book time with whomever is available on the day/time they want to schedule. See Microsoft Bookings for more information.