Event creation - Participants This step allows you to define how many accounts (leases) you want to have as part of your event. For instance, for a hackathon with 5 participants, you would define 5 accounts: Set the number of accounts you want to create Note: You can reserve accounts for your event by adding an account and not assigning it to any user For big events, you can import a CSV file with the list of events Assign users to the event you will create How to assign user to an account Click on the "Assign user" button and select the user you want to assign to an account. Once assigned, the status becomes " Assigned "   If you let the account "Unassigned", a lease will be created but not assigned to any user. This is a way to "reserve" an account and prepare it before later assigning it to users.   How to import a CSV Click on the Import button: You can then Drag and Drop your CSV file: Format of the CSV file is as follows: email1@example.com email2@example.com email3@example.com Only valid e-mail addresses will be processed. So if you add a header to CSV file, it will be ignored.   Sandbox Studio will then check the CSV file: After a few seconds (depending on how many users are in the CSV file): Only the found users will be added to the event:   Once account numbers are set and users assign, click Next to Event creation - Managers