I have built a SharePoint Online team site template and a Web API in a classic team site.
Now I want to use some of the modern site features (e.g. Microsoft Teams, Office365 Groups). But I do not want to use the modern site as primary site - only the named features. When I connect to Office 365 groups (PowerShell) the modern site get the default homepage.
But when I change the permissions on my classic team site, the members do not change in the office 365 group.
Is it possible to connect the permission of modern site and exisitng team site? Maybe I do something wront during the process of connecting to Office 365 groups. Is it also possible to add existing classic team sites to Microsoft Teams?