How to make multilingual on two domains in Wordpress using the WPML plugin?

Question

Plesk

Good evening / afternoon.
There are two domains, there is an installed VI, there is a Plesk control panel. I read that it is possible to make multilingualism on two domains using the WPML plugin, but I did not fully understand how to do it. What should be considered, besides the price of the plugin? Does the splash play a role in setting it all up.
It is necessary that, for example, yoursite.ru is Russian, and yoursite.de is German.
Many thanks in advance for your replies.