Then there is not any really need to use whom in any respect (and the great greater part of people don't). Will you be interested in how people utilized to get it done? Use 'whom whenever it is a immediate or oblique item (like after a preposition like 'to'). https://financefeeds.com/your-bourse-partners-with-blockfills-to-unlock-new-liquidity-avenues-for-institutional-clients/