How Do NPHC Orgs' chapters come into existence?

[aephi alum]

I'm picking on the DST forum because of your expansion to Jamaica (congratulations, btw )

I'm curious to know what the expansion process is like for NPHC orgs. At a university, would the university invite the GLO to colonize or would the GLO establish a chapter that would then seek recognition by the school? Could a local org become a chapter of an NPHC org? How would the process differ for a citywide chapter?

I hope asking this question isn't straying too close to the prohibition against discussing membership selection. I'm not asking how the specific chapter founders are chosen; I'm curious about the general process.

Thanks