Multiple Sites

Hello Author, I created a multiple sites under one domain name with the same theme but different contents. In each sites will have it’s own sign up and sign out functionality. The users need to sign up in the main site – site.com first before the users can sign up the sub sites – site.com/a, site.com/b, site.com/c, site.com/d, site.com/e. Users can use the same sign up details and password to the sub sites. Is your plugin can do the work? Will your plugin allow the users to sign in in the main site and will be automatically sign in to rest sub sites. One SignIn in the main site and SignIn the rest. I need your help on this please. https://wordpress.org/plugins/multisite-user-sync/