Services are the things you record at your yard. For example, you could have things like Bring In, or Turn Out, it’s entirely up to you.
Each service you add will be available when recording a log book entry, unless it’s in a medical category – these a treated differently, which is described in another KB.
Each Service is assigned to a category, such as Livery or Extras, allowing you to group them together.
The name you provide is what appears on the invoice, so be descriptive, for example “1 Hour of exercise”. That way when your client reads the invoice they know what it’s for e.g. 2 x “1 Hour of exercise”.
A measurable service is one where you want to record a certain measure, for example a quantity of a vaccine. You typically would only have measurable services under a Medical Category, but there’s no limitations.