Tell us what you are trying to do?
I want to register three domains: 2 dev URLs and the production URL. My question is if I work on one of the dev URL and I translate everything on one of them, will I be able to move that content to the other dev and production URL without affecting the translation? For example, we want to use translation machine but if we pay for a quota and we don't use it completely, are we going to have the same quota (number of words available) on the other URLs?
Is there any documentation that you are following?
No, I couldn't find anything
Is there a similar example that we can see?
What is the link to your site?
DEV URL: hidden link
So practically, everything will be stored on one server, on the server where the main domain (for the main/default language) is hosted and in the WPML settings, you will be able to set up multiple domains for each language.
Regarding the machine translation quota, yes, it will be available for any of the languages/domains.
I hope that you will find this information helpful.
Please let me know if you have any more questions regarding this topic.