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Can't find place to drop in token for Ziggeo like video tut

Followed Ziggeo tutorial up to the point where token is dropped in, but I don’t have such a field. So where does the token go? I’ve searched hi and lo. Also, for some reason, an error pops up saying Ziggeo isn’t installed. Yes it is. I"ve uninstalled it then installed it again and still get the same error. Ziggeo site says to drop code into the header; does that mean the html header or the API header? Ack.
TIA,
John