Dear Senthilkumar,
what a fanciful question! Can you ride on two horses simultaneously? You should remember one important fact of employment - i.e., as an employee, irrespective of your employment status,responsibilities and abilities, what you are doing is simply selling your time to your employer at his disposal for the consideration of appropriate compensation. Duality or multiplicity of role-play of an individual in an organization by virtue of his status of employment does not, in my humble opinion, entitle him to stake a claim for distinct multiple compensations in the form of salaries accordingly.