ATTiny84 & RFM69W

Which pin on the ATTiny84 would one hook up to the NSS pin on the RFM69W?

Looking at the datasheet of an ATMega328P-PU, it would appear to be pin 16 i.e. the SS pin.

The ATTiny84 datasheet does not show an SS pin.

I also note on the ATMega328P-PU there is an SCK pin (19) whereas on the ATTiny84 there is a USCK pin (9). Are these pins equivalent i.e. for SCK do I use USCK on the ATTIny84?