Hello, Ravinder,
Thank you for your response.
1/ Please check how it works on our demos. Registration functionality comes from WooCommerce plugin, so read this article, please – https://woocommerce.com/document/configuring-woocommerce-settings/#accounts-and-privacy-settings
2/ You can configure the position of slider content (including the button) via these settings – https://prnt.sc/2m3dqbrt4GOa
There is no custom button position, unfortunately.
Kind Regards,
8theme team