nextjs 13 multy domain [ online lesson max 1 hours ]

I have multy domain and want configure them in same nextjs 13 app root.
app root as
app
[sellercenter]>............
[admin]>............
[default] >............

sellercenter.localhost:3000 -> sellercenter [ it will see only sellercenter root and below]
admin.localhost:3000 -> admin [ it will see only sellercenter root and below]
localhost:3000 -> defaul root. [ it will not see admin or sellercenter root][all of domains which not sellercenter.localhost:3000 and admin.localhost:3000 will see this root.]

i don`t want beginner.
please explain what u understant from my project and how you will do it.
You need connect my loptop over anydeck and set and teach me after awarded.
Happy bids.