BuddyPress.org

Okay after alot of trial and error I came up with this and it will do what you stated above. First I hope your using a child theme. If so go into the style.css and add this line:
`
li#members-all.selected {
display: none !important;
}
`
That will rid you of that “All Members” tab.
Next follow my instructions in this link and adjust it to your version of buddypress because the directory structure is different but it shouldn’t be much of a problem. Here is the link:
http://pastebin.com/FMvCEKmf