Hello,
I hope it is the right purchase.
There is an option to edit a single recurring event. If you hover over the title of a recurring event you can see Edit Single
Clicking that will enable you to edit just that event. However, editing an event that way breaks it out of the recurring event group after you edit it. So it will be a single event from now on and no longer part of the recurring event series. That only matters in the admin on the front end it will still look like it is apart of the series.
Does that answer your question?