There are 3 possible methods of Outlook integration depending on your needs.1, Using Calendar Subscriptions
For read only access you can subscribe to calendars which can be added to, or shown next to, your standard Outlook calendar. For more details on calendar subscriptions please see viewtopic.php?f=19&t=9872, Using email invitations
Event sharing is possible using email alerts with automatic invitations attached. For more details on sending and receiving invitations to remote calendars please see viewtopic.php?f=19&t=964
For more details on email alerts please see viewtopic.php?f=19&t=5403, Send directly to Outlook
You can send events to a single or multiple Outlook calendars manually or fully automatically. To export events to Outlook you must have at least Microsoft Outlook 2003 installed. Multiple calendar paths allows each resource in your schedule to be linked to a unique Exchange calendar you have access to.
From the Tools menu/Options/Events/Outlook you can type a single calendar location or a calendar location for each resource in the 'Resource and Calendar Mapping' area. For multiple calendars you need the ID of the resource and the calendar location for each entry. E.g...
This will link a resource with the ID 123 to the Exchange calendar found at the location 'Personal Folders/Calendar', and a resource with the ID 456 to the Exchange calendar found at the location 'Personal Folders/Calendar2'.
The data sent to Outlook is template based that you can fully customise. This template can be edited in the Options/Other/Template section then select 'Event - Outlook' and press Edit. More detail about template editing and the event fields can be found here... viewtopic.php?t=697
Note: You can see the paths that the Exchange server is allowing Schedule it to see by clicking the button '...' on the right of the Outlook Paths box in Schedule it. To access another users calendar you must have MAPI access (not POP or IMAP) to your Exchange server and must be granted access rights and delegation rights for the calendars you want access to. See topic below for more details on MAPI connections.
Note: Each single Schedule it desktop license can support 3 Outlook paths. Additional licenses can be purchased to support a higher number of paths. E.g. 10 desktop licenses can support 10 Schedule it users and 30 Outlook Paths.