Reply To: Disable editing user roles on users page.

[Vladimir]

Try to install this code (theme’s functions.php or Must Use plugin):

add_filter('ure_users_select_primary_role', 'my_users_select_primary_role', 10, 1);
function my_users_select_primary_role($select) {

    $user = wp_get_current_user();
    if (in_array('user-manager', $user->roles)) {
        $select = false;
    }
    
    return $select;
}

add_filter('ure_show_additional_capabilities_section', 'ure_show_additional_capabilities_section');
add_filter('ure_bulk_grant_roles',  'ure_show_additional_capabilities_section');

 
function ure_show_additional_capabilities_section($show) {

    $user = wp_get_current_user();
    if (in_array('user-manager', $user->roles)) {
        $show = false;
    }

    return $show;
}

Replace ‘user-manager’ with your own user role ID.