What is the role of economic advisors to a national leader?

Edit: obviously, I don't know how to get this to show up under 'Ask', or whether that is the most appropriate place for it.

I'd post this as a poll if I could, as that is essentially what I am getting at. I'm hoping for enough responses for a statistically valid sample of the responding population. A previous version of this on another site got one poll response.

I wouldn't be surprised if there are zero responses to the question no matter what I ask, but I'll try to ask a fair question that most accurately reflects the situation, without going into too much detail:

Suppose there was a way for a country to create a lot of jobs without additional government spending. Due to less need for welfare spending or things like the Works Progress Administration that created jobs in the US during the Great Depression, government spending could actually decrease.

However, if one country used the system, other countries would know of it as well, and if they used it, profits of companies selling luxury goods in the first country would decrease. The 'cultural influence' of the first country could also decrease — if the first country was the US, perhaps fewer people would be interested in learning English.

The question is, what role do economic advisors have in this situation? In the US, this is the Council of Economic Advisors: https://www.whitehouse.gov/cea/

I will not quote it due to length. Other countries may have similar things. What best describes what advisors should do?

1) They SHOULD NOT do anything as a result of knowing about a system that does this.

2) They MAY or CAN share this system with the leader of their country.

3) They SHOULD share this system with the leader of their country.

4) They MUST share this system with the leader of their country.

I'd also ask, if economic advisors should not share this system, is there anyone who should? But I doubt I will get many responses even to the first question.