When I started for WMPTE we only had a Waybill, a document that was filled in by the driver at the start and finish of a portion (take over and relief)
The last I heard there was a module that slotted into the ticket machine (Wayfarer) the driver again enters their details at the start and finish of a portion, this was handed in when the bus returns to garage, and all the data is downloaded.
It contained details of all transactions, travel cards, concessionary passes and tickets issued.