RStudio Connect Multiple External Users

In our use case, we have multiple external users from different organizations, and we want to host content for them on premises.

I just wanted to confirm if authentication is available per application/piece of content. It is important that a given user from one organization cannot access content intended for another user at another organization.

Related to this post. First post, apologies if this is a duplicate but I wasn't able to easily find this information in the documentation.