Hi Kieran
We are working on support for adding users to a calendar account but on a single calendar for our new service, Loxi.io. You can get started with a free trial today and see if it will meet your needs.
Folks will be able to have their own calendar accounts and switch from one calendar to another in the UI, but it will still effectively be one calendar per account.
Events Calendar Pro does not have built in functionality to configure multiple calendars either.
Both can handle filtering using event categories and embed/display a calendar of specific events. However, the “All Events” link will still be everything in the account or events on your site. Does that clarify things?
Is there anything else I can help you with?
Thanks
Courtney 🙂