Let's say you're a foreign language tutor and you meet with one of your students/clients, Jenny Bingham, every Thursday at 5:00pm to do some conversational Spanish tutoring. Starting in November, however, Jennifer's basketball practice goes into high gear and Thursday evenings are out of the question for her. Being the flexible tutor that you are, you offer to meet with her on Sunday afternoons when no basketball will get in your way.
You currently have her repeating appointments series starting from July 2nd, 2015 and extending indefinitely (or "Forever"). You find her appointment set for Thursday, November 5th, 2015 and click to Edit the appointment:
Once in Edit mode, you change the day of the appointment from November 5th to the following Sunday, November 8th, 2015:
After the new date is set so that the November 5th appointment is moved to November 8th, you'll want to select the button to "Save Changes" in the bottom right hand corner:
Upon pressing Save Changes, you'll be presented with the option of whether you want this to affect only this appointment, following appointments, or all appointments. By selecting that you only want it to affect the following appointments, then all the appointments between Thursday, July 2nd, 2015 and Thursday, October 29th, 2015 will remain on Thursdays, where as any appointment from November 8th, 2015 - onward will be put on Sundays:
Pressing that you want it to affect all following appointments will then bring up the "Save Changes to Appointments" window where you'll see a brief summary of the date range change you made. You can also select to send out an email to Jennifer or send an update to yourself about the change to the appointment. You can also add in a change note which will go to Jennifer as well.
Once you've selected those settings, just click the green "Save Changes to Repeating Appointments" button and you'll be taken back to the Appointments > List > Open screen where you'll see all the appointments that are now included in the repeating appointment series you just edited.
You'll notice from here, that your repeating appointment series with Jennifer will have broken into two different repeating appointments. One of them will be from July 2nd, 2015 to October 29th, 2015 whereas the other will be from November 8th, 2015 onward. Here's the repeating appointment detail screen for the first set of repeating appointments that occurs every week between 7/2/2015 - 10/29/2015 on Thursdays:
And for the appointments on Sundays from 11/8/2015 - onward, they will have a separate repeating appointment details page and series ID:
On your Calendar view you'll see that the appointments for Jennifer up until October 2015 occur on Thursdays:
Whereas the appointments starting in November occur on Sundays: