To user login,
change file:
/usr/local/cwpsrv/var/services/users/cwp_theme/design/login.html
add
<script src=”https://www.google.com/recaptcha/api.js“></script>
and on the button
<button type=”submit” id=”btnsubmit” class=”btn btn-primary block full-width m-b g-recaptcha” data-sitekey=”Site key” onclick=”return valite()”>