Nintendo finally reveals the Switch console

Ok, let me old man mode for a minute;

So i made a “child account” on Nintendo.com and restricted access to child level. However i don’t see any evidence of the existence of this account on the Switch, nor any apparent way to log into it. When i Add User in the System Settings -> Users menu it’s clear that not what i should be doing.

Any ideas?

Thanks for any help, i’m taking this to my niece and nephew tomorrow!