Who decides weather a credit is allocated to an individual or weather a result is that of a team activity?

Currently we have grcPool 1, 2, 3, Charity Engine 1 and 2 listed as individuals as well as teams. Surely groups like that should not be allowed to compete in individual results for it is not fair to compete against a Pool of indiviuals.

Looking at boinc source code of the top_users.php there is:

function get_top_participants($offset, $sort_by) {
    global $users_per_page;
    $db = BoincDb::get(true);
    if ($sort_by == "total_credit") {
        $sort_order = "total_credit desc";
    } else {
        $sort_order = "expavg_credit desc";
    }
    return BoincUser::enum(null, "order by $sort_order limit $offset,$users_per_page");
}

so it effectively call a user query.

If I look to CharityEngine1 (user id=3857) https://boinc.multi-pool.info/latinsquares/show_user.php?userid=3857
it is of team GridCoin

So may be the CharityEngine1 as group is not the same of CharityEngine1 as user