How do you create a new appointment in Outlook?

Click on 'calendar'

Once you are there, the fastest way is to click on the "New" button up on the toolbar. That should open a window where you can input the name of the event, the location, the start time (including date), and the end time (including date - useful if it is a multi-day event). If it is a recurring appointment, click on the "recurring" button up at the top of the window to enter the information on how it recurrs. You can also click on the "invite attendees" button to choose who will get invitations/notices for the meeting. You have to have their email addresses if you want to send the message to them and they pretty much have to use Outlook to read it if they want to respond with accept/tentative/decline.