Please note that the Administrators role is granted full global permissions and cannot be restricted. So, it is not possible to restrict the access of a user in Administrators role to a specific site in a multisite environment.
However, it is possible to restrict the access to a site for users who are not in Administrators roles by setting the permissions for the site. Please refer to the following forum post
where this has been discussed.
You may also check the following documentation article
for more details about how to set site permissions.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Sitefinity CMS Ideas&Feedback Portal
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