Hello,
I can help you out with this, but not sure if it is a solution.
There is no method within the Events Calendar Plugin or the Community Events Plugin.
However, you could use a plugin like Duplicate Post to “clone” your Events.
Duplicate Post
Once cloned you can go in and edit the dates or any other information and publish it.
However, this does not work on the front end in the Community Events List.
If it is a feature you would like us to add, please visit our UserVoice page and suggest it for a future release.
http://tribe.uservoice.com/
Let me know if you would like anything else related to this.
Thanks