You can add a specific responsible staff to your horse, so every time you create an task for this horse, this staff is automatically linked to this action.

Find out how to do this:

  1.     Now go to profiles -> horses-> Select the horse for who you want to add a responsible.
  2.     A pop-up will appear
  3.     Below the category ‘Stable’ you’ll be able to add the responsible for this horse.
  4.     Click 'Save' 

See FAQ: How can I add a horse in equicty?