CoursePress hook to all the network

I have Coursepress instaled in the network but I need to add a hook so that when the user create a site don't have immediatily the menu of coursePress.

Actually users choose their website with ProSite plugin, and automaticly the menu CoursePress is ready on their website because I activate CoursePress pro plugin for the network.

And they don't have access of plugin or CoursesPress setting, and some of them don't need to use CoursePress.