sync calendars from 2 different sites

Hi,

Thank you so much for this great plugin! I love it!
I know there is another question related to sync-ing 2 calendars, but I am trying to implement this functionality:
1) There are 2 WP sites, a Calendar site and Blog site, both sites have the same WordPress users but different content, the users are authenticated against the same Active Directory Domain. The Events Manager plugin is installed on both of the sites.
2) I need to be able to pull certain events from the Calendar to the Blog, and to allow the users to signup for events from the Blog site. I was able to pull events from the Calendar site using the Events Manager ESS plugin, but the problem that I am facing is that the bookings are not sync-ing, if the user signs up for an event on the Blog site this action won’t be reflected on the Calendar site ( if the user goes to the Calendar site he should see that he was enrolled to the event that he signed up for from the Blog site )

Can you point me please to the right direction to implement that?

Thank you in advance for all your help!

Best!