Hello!
Please see your triggers attached. You will need to set the option "Start monitoring events at ... mins before the beginning" in the "Monitoring Options" to 1440 (that corresponds to 24 hours), so that the triggers can remember the initial prices of all selections in the horse races you will load.
After that, the trigger will automatically slow down the refresh of your markets until closer to the off, in order to save your computer's resources and traffic.
You will need to load both win and place markets obviously.
Make sure you've tested the triggers in Test Mode.