# Workspace & Billing

Manage account tiers, additional users, and workspace administration settings in ARTERNAL.

- [Upgrade your account tier](https://support.arternal.com/en/articles/11131676-upgrade-your-account-tier)
- [Adding Additional Users to Your Workspace](https://support.arternal.com/en/articles/15262385-adding-additional-users-to-your-workspace)
- [Replacing a User Who Has Left the Workspace](https://support.arternal.com/en/articles/15262473-replacing-a-user-who-has-left-the-workspace)