Click the user menu and select AIR:

This will then prompt you to search for a patient.

This then allows you to view various facets for this patient:
Natural Immunity History
Immunisation History
Medical Contraindication History
Vaccine Trial History
History Statement
Medical Contraindication Record
Natural Immunity Record

Primarily we want to Record Encounter (Add/Edit i.e. Update Encounter):
Fill in the details and Request.

More details about AIR can be found in this section of the knowledge base:
https://help.medilink.com.au/support/solutions/folders/11000017561