Is there a way to update weight, product and item count on appointment table?

I am trying to update weight, product and item count column on the appointment table but i don't see any agent type as appointment so that we can update these value from the shipment table and store in attribute field of appointment table. But even i don't see any attribute field in the backend to store these value. Is there anyway to pass these value on appointment table so that it can be visbible through appointment screen.