How to keep documents in groups separate from those on my own account?

Hi Mendeley support team, I have a question regarding the use of groups. I would like to create a group and share some of my documents there, so that the other participants in that group can see my highlights and annotations in these documents. However, I would like to make sure that these documents in the group are kept strictly separate from those in my own account - i.e. if someone in the group makes changes to a document that I also have in my own account, I do not want any of these changes synced to my own documents. Is this possible? If so, how do I need to go about it? Thank you kindly, Stefan