Questions

For “Pay for” means give money to someone for goods received. So, it is the phrasal verb which will make the sentence grammatically correct, as the sentence talks about paying money for buying certain articles. Pay out means the act of receiving money or material gain as a compensation. Pay off means to pay a debt. Pay of has no meaning.

The Department of Industrial Policy and Promotion (DIPP), Ministry of Commerce and Industry, hosts a conference on Global Digital Content Market (GDCM) 2018, on 14th- 15thNovember 2018, in New Delhi. The conference will feature sessions on music, film, broadcasting and publishing, as well as collective management, emerging models and the implications for the market and policy makers.

International Organization for Migration Headquarters is located in Geneva, Switzerland.
The International Organization for Migration (IOM) is an intergovernmental organization that provides services and advice concerning migration to governments and migrants, including internally displaced persons, refugees, and migrant workers. In September 2016, it became a related organization of the United Nations.
It was initially established in 1951 as the Intergovernmental Committee for European Migration (ICEM) to help resettle people displaced by World War II. As of June 2018, the International Organization for Migration had 172 member states & eight observer states.