Select Charge To - either Client or Horse.
Charge To = Client - more than one horse can be added to the movement
Charge To = Horse - only one horse can be added to the movement.
Select Add Horse. The following search panel will be displayed
Enter the name or up to three characters in the search bar then press Enter on the keyboard. A list of matching horses will be displayed.
Find the horse required for the movement then double click on the horse name. If the Charge To is for a horse, the search screen will close.
For Charge To client, perform the next search and continue to add horses by double clicking on the line the horse name appears in. Once all horses have been added, select Close from the bottom of the search screen.