Nevermind! I found it. Sorry, I just didn't look well enough for this one. Couldn't have been easier. Please feel free to close this one or delete it. Thanks
Well, maybe I spoke too soon. I found "Online Status Timeout (minutes)", but it seems to be limited to 60 minutes, whereas I wanted to set it to 24 hours (1440 minutes). So if anyone knows of a way to do that, I'd be thankful. Otherwise I guess I can live with it