I was approached by some guy on a project and I need your help figuring out how to go about this.

the project is basically a website where school owners who are not tech savvy can input necessary details about their school and it spins up a site from an existing website template built in react for them.

an extra complexity will be creating custom domain names for each site. will this also be possible ?

I've not done something like this before and I dont know the word for it so making a Google search has been quite hard

my stack is javascript MERN stack.