The deciding question
What will you actually do in Papua New Guinea?
ICA organises its public visa options around six broad purposes: Visit, Conduct Business, Study, Specialise, Work and Live. Inside those groups are specific visa classes with their own eligibility, documents, fees, stay periods and application channels.
A traveller attending a conference may fit a business route. Someone taking paid employment needs a work pathway. A filmmaker producing a public-release documentary may need a specialist or media category rather than an ordinary tourist permit. The activity matters more than the label you use for yourself.