Related to this issue: https://world.episerver.com/forum/developer-forum/Problems-and-bugs/Thread-Container/2017/3/episerver-10-can180t-set-scheduled-publish-on-language-verison-if-not-the-main-language-version-is-published/
Currently there's no sane way to set scheduled publish for a page language version unless the main language version has been published. This pretty much defeats the whole purpose of scheduled publish with multi language sites.
Currently one can either:
1) Use Project feature for scheduling, but it's a heavy process just to get content published. It's even worse when you have content like news or bulletins that require publishing at spesific time, you may have to create a project per page which is awful experience for editors.
2) Or just schedule publish for the pages main language version, and try to remember to manually publish all other language versions after the main language is published. Not really an option.
Would be nice if one could set the scheduled publish for any/all language versions of a page. Even if it would take 2 scheduler iterations (first publishing main language) because that cycle can be dealt with.