If it's run by superhumans quite easily. However, people are readily seduced into joining elite organizations especially organizations and institutions that have an inside running on controlling and improving the world.
There are already a plethora of similar organizations in the world as we know it. Religions, charities, the armed forces, political parties, and, of course, the cults. Plus there are organizations specialize in enhancing networking and the promotion of their own members like the Lions and Freemasons. There is no need to mention scouts because is too far on the Dark Side.
Cults, of course, are the perfect vehicle for recruiting vast armies of acolytes, enablers and minions. The main disadvantage of cult organizations as potential secret masters of the universe is they are run by people who can only be described as "fruit cakes". This term means they are not suitable for controlling governments or manipulating word events. However, if a cult was run by a cadre of superhuman beings who had all their marbles intact their organization should have little difficulty in running the world from the shadows.
In fact, such organization would function better if instead of operating through one single organization it had a slew of different organizations as its tentacles. It have a number of cults, set up and run political parties around the world, institute charities and non-government organizations, foster religions, and have many of its member infiltrate public services, the armed forces, and other government institutions and entities. Its members could stand for election or even be responsible for the machine politics inside political parties.
Funding, of course, should be easy enough. That's what they would have the cults, charities, and religious groups for.
All things considered it should be easy enough for them to be on the winning side and be the real rulers of the world. Mmm. Wonder how easy it would be to join them?