Editing a meeting on someone else's behalf To do so, open the calendar event, make the changes, and select the option to send the updated or canceled meeting invitation. The meeting update or cancellation will be sent from you on behalf of the calendar owner.
Meetings can ONLY be modified or updated by the original owner. If that person cannot update a meeting, then everyone invited to the meeting MUST delete their invitation. Doing this will cancel the meeting. Someone from the group must create a new meeting invitation and send it to the group to reschedule the meeting.
You cannot change the details of a meeting you were invited to by others. If you try to move the meeting on your calendar, Outlook will warn you that the organizer will not be notified of the change and the meeting on your calendar will be at the wrong time.
To change meeting details without alerting everyone, open the meeting in Outlook, make your changes, and then save with 'Ctrl+S' or the Save icon. If prompted to send updates, select 'No' or 'Do not Send' to avoid notifying all attendees.
Share your calendar with people or groups. Important: If you want to share a calendar that someone else owns, that person must give you the “Make changes and manage sharing” permission.
1- Click Calendar.
Select New event at the top or double-click on the calendar area to open a new calendar item form. In the Save to calendar field, select their calendar. You will only see calendars that are added to your calendar list and for which you have editor or delegate permissions. Fill out the rest of the fields as needed.
In the “Send Update to Attendees” dialog box, choose “Send updates only to added or deleted attendees” and click “OK.”
Outlook should be able to do this, if you open up the meeting in Outlook (Desktop) calendar and remove or add attendees then click send update it should give you an option to send update to all, or send the update only to added/deleted attendees. You would pick the latter option.
In the calendar, select the calendar event, and then select Edit. If this is a recurring meeting or appointment, you will also have to choose one of the following: This event: Choose this option to open and make changes to the event you've selected in the calendar.
If you are not the organizer
Only the person who created the meeting can change it. If you're not the organizer, you can't edit the meeting details.
Check Calendar Permissions:
Open Outlook 365 on your desktop. Go to the Calendar view. Right-click on your calendar in the left pane and select "Properties". Go to the "Permissions" tab and make sure that your email address has the appropriate permissions (usually "Owner" or "Editor").
One scenario in which the drag-and-drop feature fails is when Outlook is launched with elevated rights. Or in other words, it is operating as an administrator. This is because your Outlook shortcut's compatibility options were enabled, or you held CTRL and SHIFT when opening Outlook.
Only the meeting organizer—the person who sends a meeting request—can send a meeting update or a cancellation. If you want to cancel one or all meetings that are part of a recurring series, see Cancel all future meetings in a series.
Manage Another Calendar in Outlook on the Web
If you're a delegate for someone, meeting requests and updates will be sent to you. As a delegate, you can also edit or cancel meetings on behalf of the calendar owner.
After you've added the person you want to manage your calendar, select the drop-down list next to their name, and choose the level of access you want them to have. Select Delegate to give them the same permission as an editor, plus they will receive meeting requests and responses on your behalf.
Add a person to an existing meeting in new Outlook
Find the meeting invitation you want to recall and double-click to open it. On the top menu bar, click Sent Items > Items > Message Resend and Recall. Select Recall This Message. Click OK to confirm.
Hey [Name], I have a scheduling conflict for our original time, and I want to make sure I'm 100% focused when we speak. I've proposed a new time for [Date/Time] that looks clear for both of us. If that doesn't work, feel free to grab a different slot on my [Link] Calendar Link here.
Via a calendar invite using Outlook online (webmail)
When you add a calendar selecting from the directory, the calendar owner will not be notified.
Viewing someone's calendar in the Outlook app is straightforward, assuming you've been granted the necessary permissions. Open the Outlook app and switch to the Calendar view. In the Home tab, click on “Add Calendar” and select “From Address Book.” Search for and select the person whose calendar you want to view.
Right-click on the folder and choose Sharing and permissions. to add them. Enter the name or email address of the person you're giving permission to, and then select Add. From the list of names on the Permissions for the folder window, select the name of the person you just added.