Śrīla Prabhupāda writes, “Another important procedure is that the most exalted personality in the assembly of such a sacrificial ceremony is first offered worship…. This particular ceremony is called agra-pūjā. Agra means ‘first,’ and pūjā means ‘worship.’ This agra-pūjā is similar to the election of a president. In the sacrificial assembly, all the members were very exalted. Some proposed to elect one person as the perfect candidate for accepting agra-pūjā, and others proposed someone else.
Srimad Bhagavatam Canto 10, Ch74, Text 18, purport