When you want to add another user to your plan, you should do it from Account Management at SelBuk.com > Login > Account management > Plan & Services > Active users
User Id / Password > Login
Plan & Services
Active User > Select > Update
Click on Users & Devices
User > Column Edit > E to edit the information require on the email-user
My Account > Complete all require fields * > Update
Each new user should have their own email/password
Remark: once the new user is created, you should install the SelBuk version available at the Apple AppStore and enter with the registered username and password. The system will ask you to download from the cloud service.
Keep in mind: each email-user should be only registered either on an iPad or iPhone.