If you need licenses for 2 to 20 users, you can buy them at our Enterprise page. The person buying the licenses will get a superuser account that allows them to invite more users via email. If you need more licenses, please contact firstname.lastname@example.org.
If you already have an account and you want to add users to the team, please go to your account settings or contact the support team.
Please find the advantages of a team account in our Blog post LanguageTool - Insights - Team-Account.