When scheduling a meeting, you can invite others to the meeting. If they are an Exchange user, they can accept calendar invitations and have them automatically entered into their calendars. You can also send invitations to others via e-mail. Also, note that in order to schedule resources, you simply have to invite them like any other user. You will receive an automated response based on the resources availability.
In the Required... field, enter the names of those you wish to send invitations to. To schedule a resource, enter its name in the Resource... field (Ex. TCOM215). You will receive an automated response based on its availability. Click the Check Names icon (the little man with the check).
TIP: You can also enter the email addresses of non-Exchange users to send them an email invitation too.