How can access group JAM SAP HCM P&F Fiori group?

I am interested in the new functionality that allows access to HCM P&F from Fiori forms.

In your note "2673872 - Release information of Fiori Apps for HCM Processes and Forms" we are informed that we can download SAP HCM P&F Fiori Comprehensive guide.

The note refers to contacting 2 email addresses to have access to a JAM group but I have already sent several emails and nothing happens.

Thanks