Introduction to Key Players that Lead to an Engagement

Hi, our firm was recently approached by a leading foreign company looking for JV partners to establish and expand their business in my country ("Home Country"). The CEO's (a very prominent man) head of business development (together the "Foreign Party") asked us to introduce them to key players in my country. When I say key players, I don't mean their second in commands, but the owners of some of the leading companies in my country ("Tycoons"). As an investment bank, we had ideas for Foreign Party and so we introduced them to Tycoons who we thought could add value. After all the meetings, there were emails exchanged between and they want to move forward with the partnership or JV. As an Investment Bank, my assumption is that we should have the right to either advise one of the parties (I'm thinking Foreign Party) and/or be part of the JV (whatever that may be - still figuring it out). Off course, our value add is that we can help structure and advise them on the ground. Any ideas on how fees should be structured under this situation? Also, how do you approach the Foreign Investor or Tycoon to discuss fees?