Create & Manage Members only by a Group Admin

I´m using buddypress and s2member(Pro) for some hidden groups on single site.

I want to allow only the "group admin" (s2member, Role with special capabilites) to create, manage... new members of his group.

Is there a good and secure plugin to do this?

The best way is (I think :slight_smile: ):
1. Group admin creates a user and set First Name & e-mail-adress
2 The user gets an email with a link to set his passwort. I have added some custom fields, so he or she should able to manage his or her profile.

Is there a good way to this?

Thank you very much!