[salexys]

if not, you can even be implemented such that it was possible to create a common group (folder), and there put other user groups.

See if the multi network plugin can help you.

when using there is other problem

[salexys]

WP Multisite is not a multi network ! So i guess you have to enable BP on the main site only, not on each site of your network.

when buddypress included as common to all sites – all works well. But I want to make multi Network BP, so turn BP on each of the sites.

[salexys]

I have one administrator account on all sites, trying to register on the site with a different browser as a user, I come as an administrator in the first browser, the problem persists. Cokkies I delete, does not help.

[salexys]

Hello, I have a similar problem.

WP 4.1.1 + BP 2.2.1 Entrance to the site is carried out as the creator of websites (Super Admin).

I using multisite WP, when buddypress included as common to all sites – all works well,
when buddypress enabled separately for each site, the error appears on the tab Manage Signups – Pending – Error “You do not have sufficient permissions to access this page.” (wp-admin/users.php?page=bp-signups)

example:
http://prntscr.com/6lh8x8
I click on Pending (0)
http://prntscr.com/6lh9tt

the error persists at all sites.