Hi Ryan,
Thanks so much for reaching out and for your interest in our products!
With Event Aggregator, you can set up a Scheduled Import, so that all of your events (or select events) are exported/imported into your sites. You can have these events imported into a particular category and filter which events get imported as well.
You can learn more about creating scheduled imports using Event Aggregator on our Knowledgebase here:
https://theeventscalendar.com/knowledgebase/import-from-feed-or-url/
You can read more about multisite licenses here:
https://theeventscalendar.com/knowledgebase/multisite-license/
Let me know if you have any other questions!
Thanks,
Jaime