Thread:VisualEditor/Feedback/Is it possible to enable VE on a certain page?/reply (2)

It can be configured per namespace, but I do not believe that it can be turned on for a single page within a namespace. Сунприат's suggestion of using the Draft namespace is one possible solution. Alternatively, you could create a "User:Sandbox" or just a subpage in your own userspace, and invite people to use that instead.

VisualEditor is offered there by default. Do you think that people really need a separate sandbox for it?