As people come and go, we need to add and remove users to various properties GWT profiles.

Does anyone know of a way of doing this in bulk?

e.g. newuser = john.example@gmail.com
add to all profiles where adam@example.com is owner

Keeping an eye on this one as well..

Mind you, we've had some serious issues with huge accounts with +500 sites in them. Users and verification keeps getting disconnected.