Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Training / Qualification; Human-Machine Interface
Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Flight Crew Executed Go Around / Missed Approach
Human Factors
Arriving from ZZZ; myself and the Captain were preparing for an ILS to Runway 12 based on available weather at hand. Once handed off to Approach Control; we were instructed to expect the RNP 30. Given our close proximity to the airport; I scrambled quickly to load the FMS and review the changes. I failed to notice the available IAFs available and was instead hastily looking for one of the IFs in the FMS. Given our plan to conduct a visual approach and use the RNP for guidance; I elected to select 'no approach VIAs' and to add the additional fixes requested by ATC. As we progressed on the approach; we got multiple GPWS alerts while in VMC; including 'pull up.' The Captain discontinued the approach and elected for a go-around followed by the published hold to troubleshoot. We later completed an ILS to Runway 12; circle 30 without event. Thoroughly review approach plate and recognize the appropriate approach VIA option. If needing additional time; request delay vectors.
Air carrier First Officer reported receiving multiple GPWS alerts on approach to BZN airport.