This is additional information that will appear in the session information in the session lists but not affect the invoice. For example, a mobile dog wash service may want to include the client’s address in this section or a massage therapist may include their client’s preference of massage oil for that session. Another example could be a counsellor that sees a number of clients from the same organisation. In this case, the name of organisation that pays for the service would be the client for the session i.e. the organisation would appear in the ‘Name’ field and the name of the person they are seeing for the session could be written into the ‘Summary’ field. The individual’s name could also be written in the Invoice details, so the organisation is clear about who was seen and when.