Using TEC on multiple websites
I’m sorry about the delayed response – your Event Aggregator license can actually be registered on up to 10 domains, and this allows you to run up to 100 scheduled imports per day. This is in total, not per site. So, as long as you are under this limit, you should be all set with the license that you have!
I would recommend taking a look at the following articles, which have some good info on how Event Aggregator works and getting your imports up and running:
Please let me know if you have any questions!