The buttons are just linking to a URL. You can using a Custom HTML field place the button directly on the registration form as a field on any tab you like or anywhere you want really. Example of the URLs as follows.
Facebook:
index.php?option=com_comprofiler&view=pluginclass&plugin=cbconnect&provider=facebook
Google:
index.php?option=com_comprofiler&view=pluginclass&plugin=cbconnect&provider=google
Twitter:
index.php?option=com_comprofiler&view=pluginclass&plugin=cbconnect&provider=twitter
I recommend ensuring the field is set to display on registration only. Example button as follows.
Code:
<a href="index.php?option=com_comprofiler&view=pluginclass&plugin=cbconnect&provider=facebook" class="cbConnectButton cbConnectButtonIconText cbConnectButtonFacebook btn btn-primary btn-sm btn-block" title="Sign in with your Facebook account"><span class="fa fa-facebook fa-lg cbConnectButtonPrefix"></span>Sign in with Facebook</a>
There is nobody to help me ?
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