Can ScreenSteps publish articles in multiple languages to Zendesk?
No and Yes.
Zendesk has multi-lingual support. What this means is that in Zendesk an individual article has multiple translations. For example, knowledge base article id 1001 can have translations for english, spanish, AND french.
ScreenSteps does not have multi-lingual support. While you can write an article in any language you want, each article only has one language. For example, knowledge base article 2015 can be written in english, spanish, or french.
Since ScreenSteps only supports one localization per article, ScreenSteps can only push to one localization in Zendesk. You can choose whichever localization you would like when you set up your Zendesk connection, but ScreenSteps will always push to that localization.
If you are going to use ScreenSteps with a Zendesk account that needs to deliver documentation in multiple languages then you would be able to create the content for one localization in ScreenSteps. You would then need to do the translation for all other localizations in Zendesk.