No problem. If you I have any issues or question, ask.

Oh, then I misunderstand you.

No, the plugin users online is not from me. User online zeit ist From me. And my Plugin count the time how long a user is on in this forum and display that.

But I know the plugin you mean, and i think it will not development anymore for the new WSC.

Because the WSC had a box that called user online, that is a system box, you can configure that over that ACP under content->boxes who finde the box and if you edit them you can change the permission of this box.
I hope that is was you searching.

where exactly did you set it or what exactly did you set everything?

Yes, I´m the plugin developer und this plugins is compatible with the WSC5.2/WSF5.2 in the Version 3.1.0