Right-clicking over an appointment and choosing purchase history will show all previous purchases for the client.

[IMAGE — needs manual upload: image.png] (original: <img src="https://patientnow.file.force.com/servlet/rtaImage?eid=ka0Rd0000002TAn&feoid=00N3s00000QF9k7&refid=0EMRd0000091CUz">)