wp multisite for several domains on webservers

Hello wpmudev-team,

situation: on my webserver I have a wp multsite installation on my primary domain and registered 2 more domains which are pointing as addon-domains to my primary domain root folder.

Here is what I want to accomplish:

creating a network where I can maintain several domains at a time via wp multisite.

Each domain, f.e. simonesantos.com needs to support a multisite language feature. I want to use the WPMLS multisite language switcher plug-in which requires a multisite installation.

Can you tell me how I can create such a network and do the addon domains need to point to the primary domain root folder?

Thanks, mikkolaus