To change time for only one occurrence of a recurring meeting in Outlook calendar, please do as follows:

1. In the Calendar view, double click to open the specified occurrence of the recurring meeting.

2. In the popping Open Recurring Item dialog box, please click the Just this one option (or Open this occurrence option), and click the OK button.

3. Now the occurrence is opening in Meeting Occurrence window, please change the start time and end time as you need, and then click the Send Update button. See screenshot:

4. In the popping out Microsoft Outlook dialog box, please click the Yes button to go ahead.

To change time for the entire series of a recurring meeting in Outlook calendar, please do as follows:

1. In the Calendar view, please double click to open the recurring meeting whose time you will change.

2. In the popping out Open Recurring Item dialog box, please check The entire series option (or Open the series option), and click the OK button. See screenshot:

3. Now the recurring meeting is opening in Meeting Series window, please click Meeting Series > Recurrence. See screenshot:

4. In the opening Appointment Recurrence dialog box, please change the appointment time, recurrence pattern, or range of recurrence of this recurring meeting as you need, and click the OK button. See screenshot:

5. It returns to the Meeting Series window, please make any other changes as you need, and click the Send Update button.

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