Coronavirus conversation; Vaccine deployment, game theory. Indonesia's different drummer

Vaccines have been deployed. What are the results so far? Would be the best and most efficacious pattern of dispersal? In the laboratory of ideas, Indonesia is taking a different approach, vaccinating, preferentially the busiest and most active individuals rather than the elderly (first).
Does everyone need two doses? Does everyone need a full dose? If shortage situations existed or persisted, what would be the best (game theory) strategy?