i believe it was part of the secondary application, there were multiple pathways you could choose to write additional essays for, for example, i applied for the urban health equity pathway, and answered those additional essays

On the interview day I’m fairly sure they mentioned you can apply after matriculating as well because there are three versions of global health pathway “access.” One is available only to global health pathway applicants, one is basically you can do everything cool that they offer but there’s a catch (iirc it’s like the global health specific people get priority choice) and then you can pick one off global health things