So, how does someone organise a " moi festival "? By making an announcement of the feast, printing invitations, booking a large hall and hiring a contractor for overseeing the arrangements, as per the article cited. Samas in this article says that his friend showed him 300 odd moi invitations, which means the desperation this year is high.
In the article, samas says that now the practice is for 3-4 people to organise the feast together but have their own collection teams. The feast is basically mutton with rice as biryani and with other accompaniment. The feast is organised in a public place or a temple. A rent is paid to the temple as well. So, you organise the feast and invite your guests, they enter the pandal, pay their moi, have food and leave. Every family retains a ledger of all those who have paid moi to then, the amount and all those to whom the family has this contributed over the years. I suspect once this was not so rigourous as it seems to be now and once a family raises above an economic barrier, it would not consider organising these feasts and wouldn't mind if others didn't repay. However, currently, this provides some space for intimidation and unethical practices.
So a family that receives money -in this article for instance he days the total receipt of the one feast was 2.5 crores to be split among the 4 - keeps account of it and next time savvy of those who have contributed organise a similar feast, it is expected that the family would re pay the amount with some voluntary interest. If they want the relationship to sustain, they may top up the moi amount with an additional amount as well!