Thanks Pat. Yes, this is definitely the easiest and quickest to do this. I use the 'INST' value as the item number on the Wiring Diag. since every item needs to have a different number for routing purposes. It's normally easiest to assign this value after the wiring diagram is laid out, which is after the Schematic is drawn. Then the 'INST' values are allocated to each item on the wiring diagram from Top to bottom, left to right. This value then becomes part of the Panel wiring diagram annotation text, representing the destination of each wire.
I'd be interested to know how others handle wiring diagram wire routing to/from information, although I know a lot of companies seem to have 'done away' with wiring diagrams nowadays, or use some sort of table format instead.