Then there's no really need to use whom in any way (and the great the vast majority of people Will not). Have you been interested in how people employed to get it done? Use 'whom whenever it is a direct or oblique object (like after a preposition like 'to'). https://financefeeds.com/tradingview-adds-xcube-to-broker-list-expanding-direct-access-to-uae-markets/