There are 6 roles for users. Each user has access to features based on their role.

Feature Owner Admin Editor Writer Contributor Finance
Write posts
Publish posts
Publish/edit others' posts
Moderate comments
Upload media
Create/edit tags
Add/remove users
Access to billing
Edit Theme
Change blog settings
Delete Blog

Users settings: Console → Settings → Users.

Languages Access

Currently, all your users have access to all languages. We are working on introducing languages access settings. Stay tuned!