Modernize your SharePoint team sites by connecting them to new Office 365 groups

Hi Bruno Aleixo,

Thank you for the information. on top of Abhimanyu Singh's response:

Is there an official MS link which details how this process works? It's quite confusing as it is, as (from my experience and searching online) you *can* add stuff to the visitors groups and members groups, i.e. SharePoint doesn't stop you doing it or warn that you shouldn't.

Also, as I said in my last post: I have noticed that if you are persistent and keep adding the "everyone..." group into the site visitors group, then eventually it will stick and SharePoint *seems* to give up trying to delete it...(?)

As an aside, I also found a while ago that removing the members group (even if you add one back in with the same name) will break the security in the modern team sites.

It seems that there are lots of things you *can* do in modern team sites using the standard SharePoint interfaces, but it's difficult to know what you *should* do.

I found this "Sharing and permissions in the SharePoint modern experience" MS doc (https://docs.microsoft.com/en-us/sharepoint/sharing-permissions-modern-experience) which states that "[For a Team site] The advanced permission settings allow for more granular control of permissions but is not recommended for general team use cases as the permissions will not extend back into the Office 365 Group or its related services". This is not saying that you cannot use the advanced permissions in SharePoint modern team sites, but that the permissions will not be beamed back to the Office 365 group. I have (so far) found no resources which say that you cannot add the "everyone..." group to the visitors group, but I have found other postings recommending it, e.g.:
https://www.reddit.com/r/sharepoint/comments/9gkoz0/setting_permissions_on_a_modern_communication_site/

Any further links to official MS documents explaining what you should and shouldn't do would be greatly appreciated :-)

Thanks again,

Paul.