agreeing terms with various implicated parties

1. Does "precisely as an outsider from elsewhere (as opposed to the conventional assumption of knowing intervention)" refer to "this case" (i.e. artwork it is talking about)?

2. Does "agreeing terms with various implicated parties" mean "to agree on terms that include various aspects" or "to agree with other parties on the terms"?

Context:

(It is talking about an artist from a country creating an installation in another country)

What is particularly relevant for my position is the way this case demonstrates how both the making of an artwork – that is, from the artist’s point of view, including what Christo calls the ‘software stage’ of agreeing terms with various implicated parties– and the eventual experiencing of it (from the spectator’s standpoint) can function as a means to discover and produce place, or to negotiate the terms by which it operates, precisely as an outsider from elsewhere (as opposed to the conventional assumption of knowing intervention).