Hello Juan,
I doubt you can apply this add-on to you S/4 system. The link shared by you mentions the following prerequisites:
UI FOR EHP7 FOR SAP ERP 6.0 - SPS 07 (07/2015)
is an Add On to
SAP GATEWAY 2.0 - SPS 09 (07/2014) or
SAP NETWEAVER 7.4 - SPS 04 (10/2013)
Also, you may go through following links. They may help clarify.
Fiori in S/4 Hana 1511 - Overview
Fiori (Front-End) Configuration with S/4 HANA Simple Finance (Back-end)
Thanks.
Best Regards,
Anita