How to bring more sororities to our campus?

[lulubre]

Not saying which school, but I'm very interested in expanding Greek life at my school.
I've actually emailed some sororities and fraternities who are also interested in coming to my campus. How can we do this? I've emailed the Dean of Students but I'm unclear as to what really needs to be done. We're interested in bringing DZ, Kappa Alpha Theta, Phi Mu, Alpha Phi, Gamma Phi Beta, Sigma Kappa, and Pi Beta Phi. We've emailed others who are also interested along with fraternities as well.