Hello, some of our users are heavily relying on adding colleagues to SF Events. As we do not have Lightning sync on, they won't move to Lightning where this feature is not available.

Any plans for closing this gap?

Related Ideas:

https://success.salesforce.com/ideaView?id=0873A000000TtFXQA0

https://success.salesforce.com/ideaView?id=0873A000000TtJ5QAK

thanks!