Answer
You can only acquire the XING ProBusiness add-on in combination with a XING Premium membership. This involves entering into two separate contracts, enabling you to make use of the ProBusiness and Premium features in equal measure.
You can only acquire the XING ProBusiness add-on in combination with a XING Premium membership. This involves entering into two separate contracts, enabling you to make use of the ProBusiness and Premium features in equal measure.