XG Firewall captive portal registration options

Question

Hello, 
 We need people connecting to the open Wi-Fi network to log into a captive portal to keep track of their web activity. 
 So far the configuration that is closest to the behavior I want to achieve is the one described in this article: 
 support.sophos.com/.../KB-000038037 
 I followed those steps and it worked well, the invited users are registered with the phone number with which they requested their credentials by SMS.

However, I would like an option where sms is not required. It could be that users, instead of giving the phone number, they give the email and receive the access credentials in their inbox. Or fill out a form and then no need to enter credentials on the login page. 
 
 Are there any instructions to achieve this? 
 
 Thanks in advanced.

emmosophos · Answer

Hello mh3000, 
 Thank you for contacting the Sophos Community. 
 This would be a feature request, I will pass your feedback to our PM management team. 
 " Sophos XG Firewall allows the administrator to pre-configure individual or multiple guest users using the Admin Console. The credentials of guest users configured via the Admin Console can be printed and handed over to the guest user. Alternately, guest users can register themselves using the guest user portal. The credentials and Internet access details of guest users registered via the guest user portal can either be sent via SMS or can be printed." 
 Regards,