Add someone
Say add Mike, or say a phone number. Your assistant dials them into the same call.

Three-way
You're on with your assistant. Say add Mike, or say the number. Or bring your assistant into a call you're already on.
It hears both of you. It talks when you ask. It says the call is being recorded when it joins.
On the call
Turn it on in Account settings. It stays off until you do.
The same voice passcode comes first. Three wrong tries and it hangs up and alerts you.
Then it listens to both of you, looks people up, and takes notes. It speaks when you address it, or when it can help.
Say add Mike, or say a phone number. Your assistant dials them into the same call.
Already talking? Add your assistant. It joins, says who it is, and stays.
It uses your contacts and the notes it keeps. It stays quiet the rest of the time.
FAQ
When you address it, or when it can help. Otherwise it stays quiet.
Your contacts, and the notes it has saved for you.
Yes. When it joins, it says who it is and that the call is being recorded.
Three tries, then it hangs up and alerts you.
Account settings, Assistant, Three-way calls. It is off until you turn it on.
Add someone. Or bring your assistant in. It hears both of you.