I have a WP Multisite / Multi Network installation. What I need is to redirect **all non-logged** and also **all logged in** users, except logged in network administrators, from the main site _example.com_ (including all nested pages, posts, categories etc.) to the _subsite.example.com_, that is a segregated multisite network. They share the same database. The network administrator will have access to the main site only after they will log in on the _subsite.example.com_. In this way, only the logged in network administrators must have access to the main site _example.com_.