Iím planning to sell my 5 bedroom house with itís full Evohome System. Does anyone have any advice on how to provide a simple handover guide to the new owners?

It has 11 Zones and 16 radiators with HR92s plus hot water controller all managed via the main Evohome Controller and/or the Total Connect Comfort app. I certainly donít want to be demonstrating it and/or be taking help calls after the sale, but I do want to give them enough information to provide a quick start and where to get help (this forum will definitely be on the list). Iím not even sure what would happen if/when the WiFi Account/Router was changed or how the Evohome Account/Location is assigned to another personís email. Any ideas would be gratefully received.