I am well familiar with the documentation and went over it in depth. I have a working application and I can create promotable tweets via the API on behalf of another user (Ad Manager role with create promotable tweets permissions, the checkbox at the bottom). My problem is that I have to supply the users ad account and not mine.
I am looking specifically for the Facebook style advertising model. In which the Facebook page admin gives permission to the advertiser to create posts on its behalf but all the ads are created in the advertisers account not the page admins account.
Thank you very much,