The tool has two workflows for PRA. The one you choose depends on the reason for conducting the analysis.
For example: a request to import onions from South Africa to Zambia.
Identify the pests that are associated with the pathway
Conduct a risk assessment for all the major pests that may be introduced to the risk area via this pathway
For example: risk of red palm weevil (Rhynchophorus ferrugineus) for Ghana
Identify the potential pathways for pest entry to the risk area
Assess the likelihood of introduction of the pest via each pathway. Then continue the single pest risk assessment