Question How to set some website ?

[babeuh]

Hi everybody

I'm a beginner user.

I would like to set up four websites on my plesk application with public access.

2 are production website
2 are training website

example1.fr
example2.fr
fortraining01.example1.fr
fortraining02.example2.fr

When I add a domain and set up a wordpress app, I can't find it.

I have tested some settings, I don't reach to see the four website in chrome.

Do I have to buy IP? Must shared or dedicated? What settings for DNS?

Thank you for your help.

Bab