The old system was better as I can't find what races the trebles doubles qs and quads are on at Trentham and I cannot place a bet on treble??

To see what races the tote multi bets are on go to the racing home page, above each of the racing codes there is the option to select a bet type to see. So under Thoroughbreds, select the show "Treble" and it will highlight the races that are applicable for all thoroughbred meetings. It even displays the pool value.