Can more users edit the same project from Producer simultaneously?

Can more users edit the same project from Producer simultaneously? For instance 3 master authors want to edit the same project named Project3 from their Producers or Instant Producers?

I think that is not possible , the only thing we can do is export the project in .dkp format from Master Author's 1 Producer and import arhive in Master Author's 2 Producer and only then we can edit the same project.

Am I right ? So no simultaneous editing from Producer ?

Thank You in advance,

MC