Create indoor map with Apple Maps

It might be asked wrong by me. I have a client — mall in Russia — who want to have their mall mapped IN APPLE MAPS app. How can I do it?

To request being included in indoor maps, the owners of the said location will need to apply for indoor mapping at https://mapsconnect.apple.com

That said, indoor mapping is not available in Russia as of this time. But they can still go ahead and sign up for being notified when the service becomes available in their region.

Is there a way to apply for indoor mapping while keeping the data private to the organization? Ive read some about using Core Location to do indoor positioning, but this is reliant on GPS and Wifi correct? If so it doesnt seem that it would be accurate enough to where I can preform indoor way finding.