You can create appointment similar to an existing appointment and the existing attendees, location, notes and recurrent pattern can be quickly set up for new dates and times. You can also modify any of the information before sending the invite.
Right-click on the appointment to copy and select Create a Copy. The appointment compose page opens.
To create an appointment exactly as the one you copied, but on another date, you only need to change the start and end date.
Make any other changes to attendees, location, text, etc.
Click Send and a invite is sent to attendees and the appointment is added to your calendar.