Answer:
Ensure a senior executive is present at business negotiations
Explanation:
The action action NextStep Global is likely to suggest in order to ensure influence at the headquarters is that a senior executive is made available at round-table negotiation discussion at the headquarters so as to bring the desired influence.
The rationale for this is that the set of people whose work station is the headquarters are senior people,hence would not be disposed with having discussions with just a mere employee who cannot be said to represent the company.