As we are still more than 12 weeks away from the May implementation date, amendments / changes can still be made & thus it won't be publically available yet.
The North Downs line is NOT a Community Rail line, so you've not got a formal
CRP▸ . If there's a line / station user group, they may well be able to give you some pointers though. And
it might not be a bad idea for a few more lines to go the community route. But that's way beyond the answer to an individual query; it's a way of having effective user input producing effective ideas and development.