Client management - notes

I have occasions when I would like to add some notes against a particular client, for eg, payment problems, reminders, comments on individuals etc. These would be ‘appended’ to the masterfile record and be for me only (i.e the client would not be able to see them). Is this possible at all?

If you go into a client detail screen you can scroll to the bottom and add some notes. These notes will not be visible to the client.