mainwp_addsite and mainwp_editsite

mainwp.php

// for add child site
$params = array(
    'url' => 'http://childsite.com', // child site url
    'name' => 'my child site', // set name 
    'wpadmin' => 'admin-user-name',
    'unique_id' => '', // set value if needed
    'groupids' => array( ... ), // array of group ids
    'ssl_verify' => 0, // or 1, 2
    'ssl_version' => 'auto', 
    'http_user' => '', // set value if needed
    'http_pass' => '', // set value if needed
    
);
$result = apply_filters('mainwp_addsite', $params);
// for update child site
$params = array(
    'websiteid' => ID-NUMBER, // child site id     
    'name' => 'my child site', // set name 
    'wpadmin' => 'admin-user-name',
    'unique_id' => '', // set value if needed
);
$result = apply_filters('mainwp_editsite', $params);