Is it possible to get individual extensions of jomsocial for extra surcharge?
If yes, whom should I approach?
Whom I can send details to get an offer from you?

HI Sebastian

I am not understanding what you are asking

Could you please explain it again, do you want to purchase anothe licence for Jomsocial?

I need some more features in jomsocial but I have a little time so I will pay for the development of the features.
Is it possible?

Hi Sebastian,

Thanks for explaining the question. We don't offer any custom work you would need to hire a developer www.jomsocial.com/jomsocial-developers