N.B. The screenshots and descriptions are for the iPhone/iPad version.
Activities are used by the Lists functions in the App. If you have a busy yard you can allocate activities such as Ride, Lunge etc., to different riders (or handlers).
This screen is where you can customise the list of Activities for your yard. You can add, rename or re-order the default activities.
You can also mute items you don't use so that they don't appear as a choice when you are constructing lists.
To re-order the items, tap on the icon at the bottom left of the screen. The order you arrange them in this screen, will be the order they are shown in the Lists screen.