I'm new here so sorry if this is an obvious question.

Hi guys

How do I set up multisite and does it work for unique URLs?

I joined because I want to use the multisite functionality for my 10 Wordpress websites. From reading your (excellent) documentation I now am unsure I can use multisite for my situation. This is the page I'm reading from:

https://premium.wpmudev.org/manuals/wpmu-manual-2/creating-a-network-to-enable-wordpress-multisite/

Each of my websites have a unique domain name - they are my sites, not sites I build for clients.

From what I understand from your documentation, I can only use sub-domains, not unique domain names. Is that correct?

If not, how do I:

(a) Actually set up multisite? This article launches straight into multisite as if it's already set up, so I need the step before https://premium.wpmudev.org/manuals/wordpress-multisite/

(b) Bring the sites I currently have, into my multisite situation?

Huge thanks in advance!
Terri Ann