You need to add it into the profile.php document. You need to check that your theme has the profile.php and users.php document, if not copy the examples one across tweaking them to work with your theme if necessary.
Then modify the profile.php file like this:
<?php
add_action('aleph_user_profile_fields', 'display_user_cimy_field');
function display_user_cimy_field() {
$gender = aleph_get_user_cimy_field("gender");
if ($gender) {
echo '<dt>Gender</dt>';
echo '<dd>' . $gender . '</dd>';
}
}
aleph_user_profile(
array(
'before_title' => '<h2 class="center">',
'after_title' => '</h2>',
'before_section' => '<div class="entry"><h3>',
'after_section' => '</h3>',
'before_avatar' => '<div style="float: right;">',
'after_avatar' => '</div></div>'
)
);
?>