Open the meeting and click on the forward button. Forward the event to the single user.
You can also try opening the meeting, removing the person in question, re-add them then save. You will be prompted to send and be given a choice just to send to the person you added. Choose that option.
Found the secret to forwarding a calendar invite to only 1 person, and not re-sending it to the original receipients. Open the meeting, go into SCHEDULING- add the person to the list and then click on Send Update and it will give you the option to send to only added/deleted persons or everyone.