* in IDE:
# open `/core/units/users/users_event_handler.php` file for editing
# go to `OnAfterCopyToLive` method declaration
# add `$this->Application->emailUser('USER.PSWDC', $event->getEventParam('id'));` code before method ending
# save changes
* in Admin Console
# go to {nav User Management > Users} section
# create new user
# remember ID of created user
# go to {nav Tools > Query Database} section
# type this SQL `SELECT PwResetConfirm FROM {your_table_prefix}_Users WHERE PortalUserId = {your_user_id}`
# press `Run SQL` button on toolbar
# confirm, that displayed value isn't empty