The decisions were taken at the Boxing Federation of India's executive meet here this evening.
The appointment of Nieva as High Performance Director comes a few days after women's foreign coach Stephane Cottalorda quit his position within a month of coming here, complaining of delay in payment of his salary.
"I can handle both the jobs. I have played similar roles in Sweden as well but obviously, the expectations are much higher here," Nieva told PTI.
Nieva took charge of the men's team in April this year.
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In another significant development, one of the two chief coaches for men, Shiv Singh, was handed the reins of the women's camp.
Shiv Singh and S R Singh were the joint chief coaches for men but now only the latter will be the chief coach.
The Asian meet is scheduled to be held from November 2.