To be specific for RNP Approach or Rnav(GNSS) in which RNP not less than 0.3 NM with LNAV Minimar
Auto Pilot is NOT required, however FD is required to be followed
REF1: A330 / A320 FCOM-> Procedures->Special Operations -> 51 Performance Based Navigation (PBN) -> RNP APCH/RNAV (GNSS) 30 NOV 2019
REF2 :ICAO DOC9997 Performance-Based Navigation (PBN) Operational Approval Manual 2018 -> Chapter 4 Nav Spec & DOC 9613 AN/937
EASA CS-ACNS ACM 20-27
FAA AC90-105
SOP -> Procedure -> DES Prep & Approach using FINAL APP