Then There is not any really need to use whom at all (as well as great the greater part of people You should not). Are you interested in how people employed to do it? Use 'whom whenever it's a direct or indirect object (like after a preposition like 'to'). https://financefeeds.com/think-you-missed-ponke-early-punisher-coin-buyers-locked-in-at-0-00375-as-1-00-target-looms/