The third procedure
Once Ragnar left, Anthony took over the negotiations. Compared to the general, he was a lot more straightforward. He directly set the terms and conditions and if the earthlings found it disagreeable or difficult to meet or wanted to negotiate a bit, he would dismiss it and move on to the next potential point for cooperation.
In the end, they didn't end up agreeing on anything as the Earthlings either wanted time to discuss amongst themselves or were contingent upon their performance in the first round of the combat portion of the games. Still, Anthony was not disappointed or disgruntled and scheduled a time for their next meeting in which they would finalize a lot of their cooperation.