An Activity is a category describing the intention for the Device, could be Production, Unplanned Setting or Planned Maintenance.
Click the Settings menu and select Device Activities.
Next click the New Activity button, you will see the New Activity panel opens.
An Activity has a number of predefined options that help to describe its meaning.
Is the Activity planned?
Does the Activity impact Availability?
Is the Activity scheduled?
Does the Activity impact Cycle Quality?
Next give the Activity a name.
Next use the Activity buttons to choose the options.
Finally click update, you will see the new Activity in the Device Activity list.