We specified how many people can have access to editing documents, spreadsheets, and presentations. The number of documents that can be edited at the same time is not limited.
Other registered users will be able to open documents only for viewing.
Please note: ONLYOFFICE recognizes a user ID for a period of 30 days. After that, you will be able to replace a user with a new one if necessary. If you share a document to external users, each of them receives a named user ID for a period of 30 days.