If you mean how can you manage more than one SIM via a single account then you can't.
48 don't provide for shared/family/group accounts.
Every user needs their own email address/login/SIM/membership etc.
To get another SIM for somebody you follow the same steps that you followed when getting yourself set up on 48.
If you need to contact 48 support about this then see the link in my signature below or email them at support@48months.zendesk.com
