Looking for the plugin similar like BP Multi Network

Thank you WPMUDEV members.

your helps always helps me alot.

Do you have any plugin that works like BP Multi Network?

My theme maker says to solve my problem, I need to use BP Multi Network plug.

But when I saw how to install, I really can't understand how.
I am not good at English.

If you have any plugin function like that, I want to use WPMUDEV plugin.

Please advise me. ^^
Thank you.